Welcome! The majority of ladies on here, travel solo.
You will only be as bored/lonely as you want to be. There are lots of things to do/places to see while on the road. Campers are typically very friendly so you should be able to find fellow campers to chat with and hang out with on your travels. There are GTG's with this group, as well as other groups you can find on line. It all depends. If you like quiet and seclusion, there are places for that. If you like people and activity, there are places for that too. I like a little of both, personally.
Definitely get out and practice driving, backing up, etc. And have your husband show you how everything works with the trailer and practice with that too. The ladies on here are experts at all that, and have all learned by doing themselves. I don't have a TT/RV yet, so I get to learn all of it too someday, but I have learned a lot just by reading on here.
You can do it! Go for it! You'll never know until you try!