6 hours of reading and experimenting is nothing
Learning to program and write tools for AutoCAD is a traject of many weeks, months or even years. I don't know what the best way is of learning but I think you should realise you need to practise a lot. Try every example you find, type the code yourself, debug and follow every line of code to see what happens, etc. That will teach you more as reading a book will do.
Jerry Winters book might be full of print screens of methods and functions but there are almost no other books to read about this subject. It is also filled with dozens of examples how to create commands and do very simple things. Even while it seems to be simple, you'll learn from it.
After some experimenting you can read guides and help files from Autodesk, read posts on forums like this and search for documents at Autodesk University Online. There are also thousands of examples to read but they mostly require some basic knowledge.
