I am a new grad and I recently got a full-time job at a large company. I signed a written offer and went through a background check and drug test. I got an email from HR that I passed them and I am ready to start. Since it's my first time getting a full-time job and I don't know much about the process, I was wondering what to do for the remaining 3 weeks before I start working. Would it be necessary or appropriate to touch base with my manager before the starting date? When do employees usually get to sign hiring documents like insurance or w-4 form?
p.s) I know it's best to ask HR, but since I got no response from HR for 3 days and I didn't want to urge them. Also, I wanted to check online :)