To answer your questions get trading view and start studying charts. I mostly use trend indicators to get in and get out.
Learn the basics ema/ma/sma(support and resistance I mostly use ema because is faster),rsi(direction) ,stochastic rsi(choppy market rsi),macd(direction) volume(weak volume=false break out),boiler bands(confirms direction)
Different strategies work for different people
His channel has different strategies u can use as well.
And him
Is best to use 3 indicators at the same time to discriminate false breakouts. Never trade first hr when the market opens.
Use long and short measurements on trading view to plan exit strategy.