Your first wash at home
Two buckets, a grit guard and a mitt per half of the car. Here is the order we use.

Rinse first to take off loose grit. Snow foam if you have it.
Wash from the roof down with one bucket of shampoo and one of clean water to rinse the mitt. Use a second mitt below the door line.
Dry with a big towel or an air blower. Never let the car dry in the sun.
Two buckets with grit guards