Most people use Excel like a calculator. Type number, hit enter, repeat.

I used to be the same way until I realized I was spending 3+ hours a day on tasks that should take 10 minutes. Here's what changed everything:

1. INDEX/MATCH instead of VLOOKUP — VLOOKUP breaks the moment you insert a column. INDEX/MATCH doesn't care about column order. It's faster, more flexible, and once you learn it, you'll never go back.

2. XLOOKUP — If you're on Office 365 or Google Sheets, this replaced both VLOOKUP and INDEX/MATCH for 80% of use cases. One function, zero headaches.

3. LET() — Name your intermediate calculations instead of nesting 5 functions deep. Your formulas become readable and way easier to debug.

4. FILTER() + SORT() — Dynamic arrays changed the game. Pull exactly the data you need with conditions, sorted how you want, without pivot tables or helper columns.

5. LAMBDA() — Build your own custom functions. I created one that cleans, validates, and formats raw data imports in a single cell. This alone saves me an hour a day.

The real unlock? Combining these with AI tools like ChatGPT and Copilot to write and debug formulas instantly.

I built Formula Lab to teach exactly this — from the basics all the way to AI-powered Excel automation. If you're tired of being the person who "knows Excel" but still does everything manually, this is for you.