Hi Peggy! Welcome to IRV2.
Like any other adventure, you will experience the occasional misstep. These are the things that make an adventure, an adventure, and like the rest of us you will learn to work around them.
If you plan to cook in your coach then take the things from you kitchen that you use the most. You know, the "must have" items. For us that included the coffee maker, crock pot and toaster oven broiler.
I agree with staying within 10 miles of home (and your RV dealership, if that's where you bought your coach) for the first couple of trips. That way you can run home if you forgot anything and should also have support from your RV dealer if you have any issues with any of your coaches many systems.
You should also pack some basic tools. What you will need will highly depend on how mechanically inclined you and your husband are.
"The Next Exit", was a good choice if you plan to travel the Interstates. We have a copy and use it all the time. We also use the Rand McNally Motor Carriers Road Atlas, Passport America guide and RV Park Reviews :: Home
While many campgrounds offer free WiFi, we don't depend on it because in many cases it's just not reliable. We both have smart phones that have both 3G and 4G LTE capability. We use the PdaNet app from June Fabrics PDA Technology Group
to tether the phones to our laptops and access the internet that way. There are other ways to accomplish this also which I'm sure other members will reveal.
That's all I have for the moment. Good luck with your new coach and new adventures.