I am remodeling a bathroom and plan to tile the floor and shower stall. The shower currently is a fiberglass (3 piece?) surround. Any tips on removing the wall panels and shower base?
Thanks

Every 3 piece I have seen is held together with adhesive. Start by trying a pry bard in an upper corner. Wear safety glasses and a mask because don't know what is going to pop out from behind the fiberglass. Older adhesives and wall covering may contain asbestos.
You said you were tiling the floor. If you mean the floor of the shower you will need to do more than just tile to the sub floor. Proper slope to the drain needs to be built up with cement and/or a membrane.