Hello Tricia,
It seems from your correspondence so far there is a lot about caravanning that is new to you. May I suggest that if you have a friend or relative who caravans, that you make a point of discussing your plans and ideas with them, and if possible get them to view a few caravans with you. They may well spot the good, the bad and the ugly things that a novice might miss.
I also encourage you to think about doing a towing course such as those offered by the caravan clubs. It may prove very useful.
If you are intending to caravan solo, then a caravan mover may be godsend even on the lightest of caravans.
When you get your caravan, do a few local trips to find out how the caravan behaves, and to discover the little things you may have forgotten and to find any non functioning items or other difficulties.
When considering towing abroad, do your homework on the local road laws, and documentation you should take with you, Bear in mind that Brexit will see some changes in these items.