All your house rules should be in your listing. @Ted282
You can set up self check in through Airbnb
Any key information for guests should be contained in your guest book. Some hosts meet guests in person or if they host remotely ask their local co-host to check guests in to share key information.
Do have a look at Airbnb Help its good for all the basics around managing your Airbnb business. For example here.
https://www.airbnb.co.uk/help/article/1644/how-do-i-add-self-checkin-to-my-listing
Also to note @Ted282 your profile should be a photo of yourself not landscapes or logo's. It's worth doing this as along with your profile it instills trust.