Hello all

I am new to this board, as I am just about to embark on learning OpenGL. If my question will sound noobish, it is because I am a noob. I know close to nothing about OpenGL at the moment.

I am attempting a purchase of a laptop computer that has a Radeon video card, that supports only OpenGL up to 3.2
I was checking online for learning materials and found a book called OpenGL SuperBible: Comprehensive Tutorial and Reference (6th Edition) , that seems to be promising.
The problem of course is, that the video card won't support latest OpenGL version, although I would like to learn it to be on track with current development, and not lag a century behind.

My question is, what do you recommend me to do ? Is there a big difference between OpenGL 4 and OpenGL 3 ? Are there many changes and features in OpenGL 4 that deprecate older ones, that a modern developer should know about ? Thank you.