Wall Painting Equipment / material
Congrats on joining the world of DIY.  I'll give you a short simple answer, but I think you need to talk with a knowledgeable sales person at your paint store for specific details.

The basics will be drop cloths for the floor, good grade painters tape to mask out your trims, a good grade 2 or 3 inch Purdy brush to edge out around trim and along ceiling, a cut in bucket, a paint tray, roller handle with short extension and a good grade 3/8 inch roller cover.  Good luck