Two years ago I bought a used rpod to use primarily by myself. Like you, I had no experience.  It's been a wonderful adventure; best thing I've ever done. I'm about tp travel to Maine and then across country and I learned everything I know right here on this forum (with much still to learn!)

I hope you have as much as I do.

Julie

Welcome!

I hadn't towed anything in years when I bought my 180 (a 190 was second choice).  But, mine tows beautifully and every trip has been uneventful.  Part of that is preparation, and checking the RV carefully and part is the RV itself. 

I use a friction anti-sway control and don't need a weight distributing hitch.  You will need a trailer brake controller.  I went with an inertia based controller to have a nearly set and forget system.  I didn't want to be fussing with the trailer brakes.  This type costs more, but it's worth it to me. 

You will need to learn to be a gentle and calm driver, watching your speed and anticipating other traffic waay before they might do something. 

Your Atlas needs the 3.6l V-6 engine to tow a 190.  If you do it correctly, the measured weight (you really should take it to a scale and weigh it) of the trailer is subtracted from the tow rating and the rest is the weight you can carry in the Atlas (for people, fuel, cargo).  In my case, the Unloaded Vehicle Weight listed for my 180 was very close.  I have added 175 lbs of sheets, towels, dishes cables, hoses, pictures .... that have it ready to go sans water and food.  Remember, there is no reason you HAVE to tow the trailer at gross weight and the lighter, the better for fuel mileage, brakes, tires wear, etc. 

Be sure to go through the "owners manual" and do the pre-flight (fright?!) checks listed. 

I just got back from E KY for the flooding.  My 180 was perfect, except for that night it was below freezing and I ran out of propane at 2AM!   

R-pods are most excellent 1 or 2 person light weight campers.