First, locate the main water shut-off valve for your entire house, usually near the water meter or where the main line enters. Turn this valve clockwise until the water flow stops completely. If you live in an apartment or multi-unit building, you may need to contact your building's maintenance or management for assistance, as there might be a central shut-off.

You'll definitely need a Phillips head screwdriver. Many Delta handles also use a small set screw, so having a set of Allen wrenches (hex keys) on hand, typically 1/8" or 3/32", is crucial. A flathead screwdriver can also be useful for gently prying off the trim plate, and a utility knife might help score old caulk.

Ensure all screws, especially those securing the escutcheon plate and handle, are tightened firmly but not overtightened. For drips from the showerhead, verify that any new rubber gaskets or O-rings are properly seated and not pinched. Sometimes, a slight adjustment to the trim or confirming the cartridge (if replaced) is fully engaged can resolve minor leaks.

Taking photos is crucial for beginners to remember the exact order and orientation of parts, especially for the handle and trim components, which can have specific alignments. Focus on capturing screw locations, how parts are layered, and the positions of gaskets or washers. These photos serve as a valuable reference during reassembly to ensure everything goes back correctly.