Operating Systems from scratch - Part 1: is it worth it?
by Vignesh Sekar · All Levels · IT & Software
Learn the concepts of Operating Systems from scratch as Operating System forms the core of Computer Science
Good, but with a weak spot (see the breakdown). Only buy at a discounted sale price. Not updated for 44 months — check whether the tools it teaches have changed.
Score breakdown
| Adjusted rating (4.59; raw 4.6 from 6,342 reviews) | 39 / 50 |
| Review volume (social proof) | 19 / 25 |
| Freshness (last updated Feb 2023) | 3 / 25 |
| Total | 61 / 100 |
|---|
How it compares in Ethical Hacking
Ranks #7 of 10 popular Ethical Hacking courses we track by score. Its rating of 4.6 is above the Ethical Hacking median of 4.5.
When to buy
Udemy runs storewide sales frequently and list prices are rarely what buyers pay, so the usual advice is to wait for a sale price instead of paying list price. Prices differ by country and account, so we do not show them; check the current price on Udemy.
Tracked history
| Date | Rating | Reviews | Video |
|---|---|---|---|
| 2026-10-10 | 4.6 | 6,342 | 8h 21m |
Tracking since 2026-10-10. Snapshots are taken every few days.