Here are a few fantastic resources for bike overnight beginners:
BikeOvernights.org (by ACA)
^The Travelling Two Bike Touring Basics book was just updated in 2015 and is a fantastic wealth of information
Yes, the second half of the list is a bit more advanced, so don’t get overwhelmed by these sites or think you need to be a “pro” or whatever that means. Just take your time and take it in. The world will be there, waiting patiently for you.