Please check your booking criteria and determine if you wish to have Instant Booking activated. If you want to allow guest to book without your involment, IB is good. However, you can stipulate the criteria for that include the guest have a previous positive review. At least there is some information that the guest is not going to trash your place.
Alternatively, you can require the guest contact you first. If you do that , you need to have some criteria for vetting potential guests. Do a little research on this process so you can stay in control of you is staying in your home. A good source of information is this forum. Read discussions around how to vet guests.
Good luck and welcome to Air BNB!!