1. Outside market hours: I do some research, chart, news, etc. Note down all support, resistance levels, etc etc - Have a daily / weekly / intraday chart with MAs and RSI.
2. During market hours - Just 5 min / 1 min / L2. That's it. Most of my trades are momo trades. So that suffices. For some swing trades, I use what I have put in #1 above.
Good luck.