I've been daytrading since 1999. I love daytrading stocks and ETFs. I do both day and swing trades, as many as 40-60/day.
Lessons learned:
It's smart to focus mainly on small under 10% gap continuations above pd high
Use combination of both trailing and hard stops
Charts $10 - $40 /share are best; charts under $10 are usually awful
Be done by 10:30
Try hybrid intraday swing trading, enter by 10, use lod stop, exit 3:30
#1 rule is small stops, most of mine are less than $70 per trade
There's hundreds more tips, those are critical