What should I do in an LD?
Anything you want 
The only limit is your own mind. I guess you’re a new LDer, so start on a small scale and in time you can try ever more difficult experiments. For instance, you may want to start with the basic experiments: talk to DCs, fly around, breathe underwater, walk through walls, explore the dreamworld, levitate dream objects, have sex, observe yourself in a mirror,…
Check out the “BIG Fav Things to do in a LD” Topic (part 2): https://community.ld4all.com/t/the-big-fav-thing-to-do-in-a-ld-part-ii/8166
Happy LDing