Lucky you. Good vis in the Red Sea will help tremendously.
The most simple tips you need to remember are;
1) Get close....REAL close. Try to use the zoom as a last resort. For some shots like Nudi's, etc, my camera is ALMOST touching the subject. Less water between you and the subject brings out color and sharpness you see in top quality shots
2) Point your strobes so that the EDGE of the strobe light catches the subject. DO NOT point directly at the subject or directly in the path between the lens/subject. Doing this will avoid the dreaded backscatter to a certain degree
3) Try to shoot upwards or straight on.....downward shots only produce so so pictures
4) Take MANY shots of the same subject....play with the strobe settings if using manual strobe. I also tend to "shoot- creep closer- shoot- creep closer" in case I spook the fish.
Have fun and don't let the camera interfere with the diving skills. Keep the camera on Auto for the beginning. Just remember to switch to Macro mode if shooting Macro. As you get more comfortable, then play with manual settings.
Finally, post here! We would love to see your shots!