Personally, there arent many books that I have read that I would say will help you be a better daytrader (I have read many books related to trading). The best books I have read deal with the right mindset rather than a specific trading strategy. My recommendation has been posted ad nausem here on ET but I really like Mark Douglas's "Trading in the Zone". For me, I read it right at the breaking out point and it helped me over that hump. I recommended it to a fellow trader at a time when I could see he needed that extra push and he read it and proceeded to break out and then made over 200k net over the next 12 months. So, for us, it helped greatly.