I am not to advantage play. I understand basic strategy, and am attempting to learn how to count cards. What is the "best" system to learn. By best, I mean which system will offer the best return compared with the ease of learning. I would put preference on the ease of learning.

What would be a good book to learn a system similar to the one I have described above? What hands change based on card count, or is it only the betting that changes?

Thanks for the advice