encyclopedia of trading strategies by katz & mccormick is ok. the title is a bit misleading ( in that it doesn't actually list trading strategies ) but it provides a good framework to begin with.
The best thing you can do is learn how to lose... I am not suggesting that daytrading success is impossible, it is just that the losses (and wins) are frequent because of compressed time... You must learn how to take lots of losses in a row with no ego... use non-trading experiences to get you into the correct unemotional mindset, then you will be ready for daytrading...
Joe Ross, "Day Trading" (2005), among his other hands-on books, going back a couple of decades. Some free materials can be found online, to give you a taste. Table of Contents * Please Read This * Daytrading vs. Position Trading - Why Daytrading * The Law of Charts * Selecting a Market, Time Frame, and Entry Point * Major Entry Signals * Intermediate Entry Signals * Minor Entry Signal * The Traders Trick * Where to Place a Stop * How to Enter and Exit a Trade * The Importance of Accurate Records * Brokers and Commissions * A Trading Plan * Filtering the Trade * Risk and Money Management * Congestions are Important * Mind-Set * Search Out The Best * The Third Contract Set * Strategy and Tactics * Trading the Minor Entry Signal * Trading Logic * Concrete Examples * Trend Finding - 1 * Trend Finding - 2 * Interesting Bars and Formation * Turning Daytrades Into Position Trades * Forex * Forex Daytrading * E-Mini S&P Trading * Something Old, Something New * Full Circle