Hi Lillicat!! Welcome to our Forum. I don't think you are crazy...you are following your dream, and there are many others out there just like you.
You are fortunate in that you are a Nurse, and you can both travel and do Contract Nursing if you so desire and wish to..Many work and travel. Some because they need to supplement their income, some as a means of getting out around people...and they enjoy their profession.
Starting as a raw beginner, my suggestion is to do some Google Searches on what you wish to learn, such as the hoses, what to put in the tanks, driving..the things you mentioned on here..Read and Study! There is a wealth of information out there just waiting for you!!
Get some basics learned and come back here to ask any specific questions.
Again, Welcome and hurry back, ya hear?? :)
Joella
It is not possible to live a rich, full life without friends.