In live poker dont let the rake , bonus drop and tips eat away your stack . Play very strong hands with big raises ,fast and early .Online try to figure out who is solid and avoid them . Target the others when you have position
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
Stick with Tournaments, they are a lot easier on your bankroll and if you are doing well in them, Why Change? Cash Games can be like a Fawcett, once you turn it on it's hard to turn off sometimes.
Go to cache when you have extra money..... You will lose at first anyway...At first, go for the smallest limits, and first determine how much money you can lose per day....
Take it easy. Stay the course, use your knowledge and skill, follow your instincts. Unlike tournaments, the blinds aren't increasing and you're never going to get into the situation where you HAVE to play marginal hands just to stay alive. If nothing is working for you, just leave.