I jus called my ins company to report it; they gave me a claim #.....wtf does this thing do anyway?

They setup an appt with a auto body shop to go see............ does that mean I can't use my own independant shop? im so new to all this, can someone help me out?

They said an adjuster will call me within 24 hrs........what happens then?

My back is somewhat sore as well as my neck.
I barely have enough money to spend on a lawyer and almost little to no time in the next couple weeks as I prep to change jobs..........what can i do?