I don't have a tried and true (or false) method.
I copied a google sheet from somewhere, and used that as a base. Added conditionally-formatted indicators. For example, stock is 90% of 1-year high, turns yellow. If it gets to 70%, turns green.
Part of the original sheet was a calculation for yield. If you enter a yield, say 4%, then the share price lights up when it gives you the yield you targeted.
I've added fastgraphs to the toolbox. That's a paid service that helps you dig deeper into data.
I've found that in those case were I read extensively, and took my time, it has paid well. Also, focus on a sector, and just a few companies at a time.