Start in the lowest stakes and play solid poker. No fancy moves, not too much
bluffing.
Make yourself familiar with different opening and calling/3 bet ranges for different table positions.
I suggest to play 6max regular tables. There you will be able to see which players are playing well or really bad. Take notes as you will see them on the tables frequently. After some weeks of note taking you can even chose the tables according to notes and labels to find the tables with fishes 🐠
Same as with Tournaments, BR is key to survive and earn on long term perspective