How to read textbooks like you listen a lecture? Best way to read academic/scientific books What are some good techniques for reading a textbook? How do I improve my ability to learn?
I read all these answers and it seems like the best idea is to solve problems. But issue with self-studying problems is that some problems are too easy whereas some are/might be too difficult.
For example, the data structures book by lipschultz contains lots of problems, but most of the unsolved problems there are very easy. And I don't know if the other problems there are made for my level.
How to select a book for unsolved problems(I mean those that have an answer but not a solution i.e not examples but unsolved problems with an answer).
How to differentiate between such problems? How to get streamlined set of problems that you know are not challenging enough to make you quit reading but challenging enough to push your limits?