Alex Tanner — Writer

Alex Tanner writes practical guides and comparisons for StackTrekker, focused on Notion, spreadsheets, and workflow automation.

Alex Tanner covers the productivity stack at StackTrekker: Notion workspaces, spreadsheet formulas, and the automation glue that holds them together. Before writing, Alex spent years as a data analyst, which means every guide here is tested in a real workflow — not copied from a manual. When not chasing a formula bug, Alex is probably reorganizing a Notion database for the fourth time this week.

Articles by Alex

Google Sheets cell showing a VLOOKUP error
Spreadsheets fix

VLOOKUP Not Working in Google Sheets? Fix These 5 Errors

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.

Aug 24, 2026 3 min read
Notion and Obsidian logos side by side
Notion notes comparison

Notion vs Obsidian: Which Should You Use in 2026?

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.

Aug 24, 2026 3 min read
Spreadsheet with formulas on a laptop screen
Spreadsheets guide

How to Use SUMIF in Excel (Step-by-Step with Examples)

SUMIF adds up cells that match a condition — the most-used conditional formula in Excel. Here's how it works, with real examples and the mistakes to avoid.

Aug 24, 2026 7 min read
Notion task database with status and due date columns
Notion notes guide

How to Build a Task System in Notion (That Actually Works)

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.

Aug 24, 2026 4 min read
Zapier and Notion logos connected by automation lines
Automation guide

5 Zapier + Notion Automations That Save You an Hour a Day

These five Zapier workflows — email to tasks, forms to databases, Slack to Notion — are copy-paste automations that actually survive real life.

Aug 24, 2026 4 min read