An excellent place to start would, in my opinion, be dbphoenix's e-book. Google dbphoenix and look for a link to his e-book. This has been recommended many times here on ET because it is among the most clearly written books on price action and interpreting price and volume.
Also Thinkorswim sponsors an educational broadcast of a guy that trades stocks intraday. This can be accessed via the Thinkorswim platform (including the paper-trading platform). If you can't afford a mentor, the TOS broadcasts might substitute.