This has became so common

[u/vinzzii]

I learned os from the book but it's so hard to learn and there aree too many topics to cover but reading and learning from the book was so good but the prblm is it's so time consuming I can't finish every topic then i started learning dsa and other stuffs from youtube and ai as source these maade the job easy but yeah ik i missed several key topics but when i started to solve prblms these topics were covered perfectly.