Topography
How the 583 lessons reference each other. Learn shows the reading order, and this map shows the connections. Pick a track from the chips or the map to see its own map. Lines show references between lessons. They do not mark prerequisites.
TrackAllFrom ScratchDSAMind BlownAIDevOpsSystem DesignFinanceNetworkingDatabase InternalsSecurityHow Computers WorkData SystemsGame TheoryPsychologyPhilosophyHow Things WorkPersonal DevelopmentPortfolio Projects
Links within and across tracks
Links within a track connect lessons on the same subject. Links across tracks show where one subject supports another. Tracks with many cross-track links, such as Data Systems and networking, mostly help explain other tracks.
| Track | Lessons | In-track links | Cross-track links |
|---|---|---|---|
| Data Systems | 15 | 50 | 178 |
| Portfolio Projects | 6 | 15 | 43 |
| Psychology | 15 | 75 | 161 |
| How Things Work | 12 | 37 | 65 |
| How Computers Work | 18 | 78 | 116 |
| Philosophy | 14 | 67 | 99 |
| Personal Development | 12 | 53 | 76 |
| Mind Blown | 64 | 281 | 389 |
| Networking | 24 | 112 | 120 |
| Database Internals | 20 | 103 | 98 |
| Security | 19 | 102 | 94 |
| System Design | 46 | 298 | 270 |
| DevOps | 50 | 282 | 189 |
| From Scratch | 92 | 491 | 297 |
| Game Theory | 15 | 63 | 38 |
| DSA | 70 | 433 | 113 |
| Finance | 37 | 167 | 42 |
| AI | 54 | 389 | 92 |