[pkulak]

I got a page about try/catch... no thank you.

This is exactly what computer science is not about. I feel like I'm an astronomer looking for a great children's book to introduce my child to the wonders of the universe; but instead I get a book that goes over all the different parts and kinds of telescopes.

[gohrt]

It's a book about programming, not computer science. You might be disconcerted to learn that the book isn't about chemistry, either, or whatever else off-topic content you insist the author had put in his book.

BTW, Telescopes are cool, a miracle of optics.