starting linux's source code and kernel
I want to learn how linux works, how its kernel works.I have been reading books about windows because i want to learn how an OS works.It will be very useful and more easy to learn it by open source linux.I have some questions
1-)I am beginner.Which linux must i install my notebook(AMD 64 bit Athlon) to learn.I want to install it by wmware.What do you advice me?Which version?
2-)This question is very important for me.I said i want to install linux because i am interest with its source codes.Do all linux systems install with its source code.If not which of them have include its source codes?I must install it with source codes.
3-)I have looked debian site for downloading it.But it seems there are 14 .iso file.Is this true?Must i download both 14 cd image?Do i need all of them?Can you give me please any information about that.(Is debian include source codes)
4-)General advices:What must my roadmap be?What do you advice me general.
I am looking for your answers