OK step one.
Measure the bathroom
longest to widest ( round up to the nearest foot ).
Multiply the two numbers to find the square footage.
Step Two.
Go to the store
Pick out your vinyl, give the clerk your measurements, and they will help you with the glue, per your brand selection.
step three.
Tools you will need.
floor scraper, floor levelor (if needed), Trowel (the proper trowel notch is on the glue) utility knife,pry bar and hammer (for the baseboards), wax ring, tub and tile caulk, and old piece of carpet wrapped around a 2×4 (for smoothing it out)And your all set!