Hey winnerke123,
I am an occasional player now although I did try to grind cash games on Stars a couple of years ago. There isn't a great deal of info out there. I learnt mostly from watching videos of ex PokerStrategy coach RainmanTrail. Unfortunately these videos are only available to Silver+ status.
I also played hundreds of Eddington freerolls on Stars to further hone my game. The first thing I can tell you about Stud H/L is don't play hands for purely low value. You must always be looking to scoop. 752 may look nice (in Razz but not Stud H/L) but it is a trip to a possibility of getting your money back (less rake).
As Stud Hi/Lo is often seen as both Stud Hi and Razz, you can fall into the trap of playing the same Hi and Lo hands that you normally play in those variants. It took me a month of 4 tabling 12 hours a day to realise this 
Your starting Hi hands need to be stronger than Stud Hi as you will often only receive half the pot. Your starting Lo hands should always be able to compete with the Hi hands.
Also there are a lot of low hunters at the micros, so whenever you get a starting Hi monster (rolled up trips, big pair big kicker, suited broadway connectors), you must bet and raise and cap if possible. Low hunters must pay to try and draw to their weak lows.
Regards
Laz