Please someone tell me, what would be a good start budget friendly class A RV. Also, tell me what not to buy and why would be helpful too. I keep reading all the messages people leave on here and everyone has things breaking, is that bad? Have you had the rvs a long time or are they breaking down after you just bought them, kind of scary. Tired of the same kind of neighbors who do not understand me when I do weird things, according to them, lol, etc. You all know what I mean who have been in a combat zone. My sister calls me a Nomad anyway because I move every 3-5 years, lol, she said it would make me happier and be better for me to be a fulltime RVer. I want to sell my home and become an RVer. Not sure when I will, hopefully soon, I need all the info I can get from all you RVers.

Thank you
Welcome to the group. You have received some very good advice so far. We are full timers and have been on the road for just over 7 years. We love being nomads. I get itchy feet after about two weeks in a spot and feel the need to move on.
Are you sure that becoming a full time RV nomad is for you? Selling your house and ridding yourself of a lifetime of collecting before you are sure is something you had better think hard on. Full timing is not for everyone. Have you spend any time in a RV? Do you have an idea of what type of RV you are considering? I know full timers that use a converted Van as their home. Many have trailers that they pull. There are small Class B, C, small Class A and monster As. Each have their own plusses and minuses. What do you need?
A good "start budget" is a difficult number for anyone to come up with. I think you are the only one that can come up with a number that you feel you can possibly live with. Income, less expenses. Expenses differ for each person.
As others have mentioned, floor plan is very important but also look at storage space. You need room for your worldly possessions (most of us have too much stuff as it is). I don't think year, make and model are as important as condition (and milage if motorized). Also, the more options you RV has means the more stuff that may go wrong. Do you need that power step, the power awning, washer and drier, dishwasher.
As others have mentioned, your RV is a house on wheels. It helps to be a handy kind of person to maintain your wheels. When (not if) a problem arises, you have a network of fellow RVers on this site that will be happy to give you advice.
Another thing to consider is that you have to ability to migrate south in the cold months and north to be out of the intense heat in the summer. This means you need less clothing and its easier to spend more time outdoors (if you are an outdoorsy kind of person).
Just an FYI if you are traveling on a tighter budget there are many areas where one can boondock. We like to boondock but not so much for saving a dollar or two but more because your neighbor is further away form you.
You asked about groups. There are a number of them. We do not belong, but Escapees come to mind. We have met a number of full timers that belong. You can google to find out more. We have met a number of like minded travelers over the years. We do sometimes make it a point to catch up with them if our paths get close.
No matter, take you time, If you are not sure of what type of RV will suit you, perhaps renting one first will help you decide.
Good luck and if you do take the leap, safe travels