@Melanie396, host mentorship is a great idea but I guess you could get all sorts of ideas and opinions. I recommend subscribing to this forum - you will get a lot of messages in your email but just open the ones that are relevant to your situation. I have certainly learnt a lot here and have been able to help other new hosts.
First thing: turn off instant booking if you don't want people to be able to do so. Otherwise, make sure you set up who can instant book under your Booking Settings (e.g. verified government ID, good ratings only, etc.). Having instant book turned on gives you certain advantages but many hosts don't feel comfortable with it. Maybe leave it off at least until you've hosted a few people and are feeling more comfortable.
If you have any other specific questions, please post them to this forum (under a separate post) - I have not doubt you will get lots of help and support from experienced hosts.