# StackTrekker > Practical no-code and automation guides for people who run their own business. Step-by-step tutorials on Zapier, Make, Notion, Google Sheets and spreadsheets. - Language: English. - Every page has a markdown version at the same URL with `index.md` appended (example: `/page/index.md`). ## Categories - [Automation](https://stacktrekker.com/automation/index.md): 9 articles. - [Notion Notes](https://stacktrekker.com/notion-notes/index.md): 9 articles. - [Spreadsheets](https://stacktrekker.com/spreadsheets/index.md): 13 articles. ## Automation - [Make.com Bundle Validation Error: What It Means and How to Fix](https://stacktrekker.com/make-com-bundle-validation-error/index.md): A bundle validation error stops a Make scenario mid-run. See the four causes, the fields that fix each one, and the error handler that keeps a run alive. - [Make.com Operations Limit Exceeded? How to Find the Cause Fast](https://stacktrekker.com/make-com-operations-limit-exceeded/index.md): Make.com operations ran out before month end? Find the four settings that burn them overnight, the scenario to blame, and how to cap each one in ten minutes. - [Make.com Tutorial: Automate Your First Workflow in 20 Minutes](https://stacktrekker.com/make-com-tutorial/index.md): Build your first Make.com scenario in 20 minutes: pick a trigger, add a Notion action, map the fields, test it, and switch it on. A no-code walkthrough. - [Zapier Won't Turn On a Zap? Work Through These Checks](https://stacktrekker.com/zapier-cant-turn-on-zap/index.md): A greyed-out Publish button or a Zap that flips back to Draft usually comes down to one of six causes. Work through the checks in order to turn the Zap on. - [Zapier Filter Not Working? Five Fixes Worth Trying First](https://stacktrekker.com/zapier-filter-not-working/index.md): Zapier filters fail for five repeatable reasons, from missing values and stale field mappings to AND vs OR logic, hidden whitespace and number formats. - [Zapier + Google Sheets: 5 Workflows That End Manual Copying](https://stacktrekker.com/zapier-google-sheets-workflows/index.md): Five Zapier and Google Sheets workflows you can set up in one afternoon: form replies into rows, rows into reports, and weekly emails that send themselves. - [5 Zapier + Notion Automations That Save You an Hour a Day](https://stacktrekker.com/zapier-notion-workflows/index.md): These five Zapier workflows (email to tasks, forms to databases, Slack to Notion) are copy-paste automations that actually survive real life. - [Zapier Storage: How to Remember Values Between Zap Runs](https://stacktrekker.com/zapier-storage/index.md): Storage by Zapier keeps values between runs with nothing extra installed. Five minute setup, ten actions, three builds to copy and the limits that break them. - [Zapier Webhooks Not Firing? Here's How to Fix Them](https://stacktrekker.com/zapier-webhook-error-fix/index.md): Webhook Zaps that fire intermittently or not at all are usually failing on one of four problems. Here's how to diagnose and fix each one. ## Notion Notes - [Free Notion Task Template (Starter Outline + Build Steps)](https://stacktrekker.com/free-notion-task-template/index.md): A free Notion task system: the exact properties, statuses, and three views to build, plus a Markdown starter outline you can paste straight into your workspace. - [Set Up Notion Calendar to Time-Block Your Task List](https://stacktrekker.com/notion-calendar-setup/index.md): Notion Calendar setup in about 15 minutes: connect your calendars, link a task database, plus the database rules and limits that make time blocking stick. - [How to Build Your First Notion Database in 10 Minutes](https://stacktrekker.com/notion-database-beginner-guide/index.md): Learn to build your first Notion database in 10 minutes: properties, views, and relations, plus the 5 beginner mistakes that silently break your setup. - [Notion Rollup Not Working: 6 Checks Before You Rebuild](https://stacktrekker.com/notion-rollup-not-working/index.md): A Notion rollup that shows blank, zero, or the wrong total is usually a settings mismatch. Run these 6 checks in 5 minutes before you rebuild anything. - [How to Fix Notion Sync Errors (2026 Guide)](https://stacktrekker.com/notion-sync-error-fix/index.md): Notion not syncing across your devices? Here are the 7 fixes that actually work, from checking the status page to clearing the cache. - [How to Build a Task System in Notion (That Actually Works)](https://stacktrekker.com/notion-task-system/index.md): Stop fighting Notion. Build a simple task system that survives real life. A database setup, status workflow, and daily routine that take 15 minutes to set up. - [Notion vs Asana: What's the Difference for Teams in 2026?](https://stacktrekker.com/notion-vs-asana/index.md): Notion is a workspace, Asana is a project engine. In 5 minutes you will know which one fits your team size, your workflow, and your budget in 2026. - [Notion vs Obsidian: The Honest Comparison for Note-Takers](https://stacktrekker.com/notion-vs-obsidian/index.md): Notion is a workspace, Obsidian is a vault. Here's what each does best, who should pick which, and how to choose without building a second brain in the wrong tool. - [Obsidian vs Evernote: An Honest Comparison for Note-Takers](https://stacktrekker.com/obsidian-vs-evernote/index.md): Obsidian vs Evernote: file ownership or convenience? Evernote's free plan stops at 50 notes and one device; Obsidian is free with local Markdown files. ## Spreadsheets - [Automate Email Reports From Google Sheets With Apps Script](https://stacktrekker.com/automate-email-report-google-sheets/index.md): Send a formatted Google Sheets report to any inbox every Monday morning using about 45 lines of Apps Script. Copy the code, set one trigger, skip the export. - [Free Budget Planner Template That Compares Plan vs Actual](https://stacktrekker.com/budget-planner-template/index.md): Download a free budget planner template for Google Sheets and Excel: set a limit per category, enter what you spent, and see the gap in five formulas. - [How to Create a Data Validation Dropdown in Excel & Google Sheets (5-Minute Guide)](https://stacktrekker.com/data-validation-dropdown/index.md): Stop typing the same values twice. Build a data validation dropdown in Excel or Google Sheets in 5 minutes: step-by-step setup, dynamic lists, and the 4 most common errors fixed. - [How to Use SUMIF in Excel (Step-by-Step with Examples)](https://stacktrekker.com/excel-sumif-formula/index.md): SUMIF, the most-used conditional formula in Excel, adds up cells that match a condition. Here's how it works, with real examples and the mistakes to avoid. - [Excel vs Airtable: Which One Handles Your Data Better?](https://stacktrekker.com/excel-vs-airtable/index.md): Excel is the formula powerhouse, Airtable is the database that looks like a spreadsheet. Here's the honest 5-minute breakdown of what each is actually better at in 2026. - [Excel vs Google Sheets: The Differences That Matter in 2026](https://stacktrekker.com/excel-vs-sheets/index.md): Excel is the power tool, Sheets is the shared workspace. Here's what each is actually better at in 2026, so you can pick without a spreadsheet turf war. - [Expense Tracker Template: Free Excel & Google Sheets](https://stacktrekker.com/expense-tracker-template/index.md): A free expense tracker template with category totals, monthly summaries, and a running balance. Copy it into Excel or Google Sheets in five minutes flat. - [Google Sheets vs Airtable vs Excel: Picking the Right Tool](https://stacktrekker.com/google-sheets-vs-airtable-vs-excel/index.md): Three tools, three different jobs. In 5 minutes, find out which one fits your data, with a real price table and a one-question test that settles the debate for good. - [IMPORTRANGE Not Working in Google Sheets: 7 Causes and Fixes](https://stacktrekker.com/importrange-not-working/index.md): IMPORTRANGE in Google Sheets fails for seven repeatable reasons, from an unapproved connection and a wrong URL to cycles, heavy ranges and blocked copying. - [Free Invoice Template for Google Sheets and Excel with Formulas](https://stacktrekker.com/invoice-template-google-sheets/index.md): Download a free invoice template for Google Sheets and Excel. Working line-item math, an automatic due date, and a total you can edit in about five minutes. - [Pivot Tables for Beginners: Excel & Google Sheets Guide](https://stacktrekker.com/pivot-table-beginner-guide/index.md): Turn 1,000 messy rows into a one-page summary in 4 steps. Beginner pivot table tutorial for Excel and Google Sheets: setup, grouping, filters, totals, and the mistakes that quietly break them. - [VLOOKUP Not Working in Google Sheets? Fix These 5 Errors](https://stacktrekker.com/sheets-vlookup-error/index.md): VLOOKUP returning #N/A when the value is clearly there? Here are the 5 causes that explain 90% of VLOOKUP failures in Google Sheets, with quick fixes for each. - [Text to Columns Not Working in Excel & Google Sheets? 7 Fixes That Work](https://stacktrekker.com/split-text-to-columns-fix/index.md): Text to Columns not working? Fix a grayed-out button, wrong delimiters, lost leading zeros, scrambled dates, wiped columns, and splits that do nothing at all, with tested steps for Excel and Google Sheets. ## Optional - [Home](https://stacktrekker.com/index.md): All categories and content. - [About](https://stacktrekker.com/about/index.md): Who we are and how to reach us.