Hi Lauren, welcome to the site. I would encourage you to look through the how to's to the right of the page and also search around the site for things such as what to look for when buying a used RV. knowing that it is already owned by your aunt there is information there that may help you understand some of the features and functions of the Rig. also there is a lot of information on just about every facet of operation on this site and folks to help you out when you need a question answered or just want to make a comment. If you can spare the cash it is a good Idea to take the rig to a reputable RV dealer or shop and have a tech go over all the systems with you and explain whats there. I done this when I bought my old Travel Craft and feel it was a valuable investment. It only took about 45 min and they found a bad propane regulator in the process. Tires are also a concern. even really good  looking tires can be a hazard if they are more than 5 years old. have them checked for the date code. My tires looked almost new and one blew out on me in the first 20 miles of my 100 plus mile journey home from picking it up. It had just past a highway patrol inspection 20 min. from the time I picked it up. I know your an experienced camper and I only mention these things so you can be aware of possible safety  concerns and also these things will give you piece of mind and some degree of confidence in the rig and that will make your outings with your aunt much more pleasurable. Good luck on your endeavors and may god bless your aunt with his love and kindness