It's so funny, just today I applied for a part-time job as a grooming assistant
I'm a stay-at-home-mom but we need a little extra income. I do have some experience since the clinic I worked as a vet tech for a few years ago (before my son was born) did some basic grooming for clients. Plus, I rode horses too when I was a teenager so that was my first experience
. You'll do fine
I'm sure they'll show you how to use everything first. As you already know, yes, watch your back with the big guys is the first thing. The blowdryers can be pretty loud and forcefull for the big dogs (alot stronger than a hair dryer) so don't be shocked by that LOL. Rince REALLY well especially on the thick coated dogs. Other than that, have fun and good luck