Intrested in becoming an Automotive Insurance claims adjuster.?

What do I need to know before I look into this? I know you have to be state licensed and pass a test, can you self study for this test? I’m not sure I exactly have the name of the career correct but I’m talking about the guy who usually works in a body shop or car dealership and just gives you an estimate on your vehicle after you’ve been in a accident. Do these guys have college degrees or is one needed for this profession? Any information at all would be valuable. Thanks.