In short
Many startups run entirely on Google Sheets. It's free, lives in the browser and lets five people edit at once without emailing 'final_v3.xlsx' around.
Most Excel skills transfer directly, but Sheets adds real-time collaboration, easy sharing, and native integrations (Forms, Apps Script) that make it the default in many startups.

Think of it like this
The shared group project notebook
Instead of each friend writing their part at home and stapling pages later, everyone writes in one notebook on the same table. You see each other's edits as they happen. Google Sheets is that notebook, online, with a history of who wrote what.
Watch it happen
Three people, one sheet
new response row
1/5A Google Form drops each survey answer straight into a new row.
The big ideas
What you need to know
Real-time collaboration
Many people edit at once, with comments and @mentions. No more emailing file versions.
Version history
File > Version history shows every change and lets you restore an older version.
QUERY is SQL-lite
QUERY lets you write SQL-like statements on a sheet range. Great practice before real SQL.
IMPORTRANGE and Forms
Pull data from another sheet with IMPORTRANGE, and collect data straight from Google Forms.
See it in code
Walk through the code
1=QUERY(A1:D500, "select B, sum(D) where C = 'Paid' group by B order by sum(D) desc", 1)2 3=IMPORTRANGE("<sheet URL>", "Orders!A1:D500")4 5=ARRAYFORMULA(IF(D2:D="", "", D2:D*0.18))1/3Group by city (B), sum the amount (D), only paid orders, biggest first. The 1 means one header row.
QUERY gives total paid amount per city. IMPORTRANGE pulls from another file. ARRAYFORMULA fills a whole column with one formula.
Save yourself the pain
Common mistakes
Oops
Sharing a sheet as 'Anyone with the link can edit'.
Do this instead
Share with specific people, and give 'Viewer' or 'Commenter' unless they truly need to edit.
Oops
Assuming every Excel feature works the same in Sheets.
Do this instead
Most formulas match, but macros and some Power Query features don't. Check before you promise.
Your mission
A form-fed survey sheet
Quick check
A teammate accidentally clears half your sheet. What's the quickest fix?
Go deeper
- 1Recreate one of your Excel exercises in Google Sheets and note the differences.
- 2Learn the Sheets-specific functions: QUERY, IMPORTRANGE, and ARRAYFORMULA.
- 3Try a simple Google Apps Script automation (even just recording macros conceptually).
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