Perry Kaufman has a chapter on Swing Trading in his book "Trading Systems and Methods". This is a textbook more than a "Make Millions using my secret methods!!" type of book.
Trading Systems and Methods - Perry J. Kaufman - Google Books
It's been very difficult for me to over-ride a value investing mindset based on P/E, P/B, reading the financial reports, etc. and actually listen to what the stock price & volume was saying. Would have had significantly better results had I done that this year.
I'm working my way through Richard Wyckoff's course from 1931/7 right now. I found a link to it on Traders Laboratory. Another timeless book is Stan Weinstein's Secrets for Profiting in Bull and Bear Markets. One of the things he advises is to keep a trading diary with only your losing trades in it and your reasons for buying (or not selling). Then after several months, look for a common denominator in the losses. Mine is a tendency to try to catch falling knives, a fear of buying higher once I've established an initial position and it's showing a profit and selling too soon / not letting a winner run the full way. Lots to work on.
But fortunately am not working (at a job), so have lots of time to focus on it.