assuming you have one that works. personally, for my bread and butter strategies over the years, i found a few hints around the internet, but not specifics. i've found books and magazines worthless for the most part, although i still get them all - activetrader, TS&C, SFO, and Trader Magazine. picked up a few books recently that i'm trying to be optimistic about. haven't gotten into academic journals too much. they are often quite pricey, but i may start getting into that. i like to see backtested results and general chart pattern and indicator books, outside of maybe bulkowski, don't do that.