Hi WomanInTheWindow.
I think firstly decide if you want to loan or buy a horse. If you want to loan, would you part loan, or fully loan?
If you're part loaning, I think a lot of the questions will have been answered for you. E.g. the horse will probably be staying at its current yard, it will already have all the equipment, so you'll only need to worry about kitting yourself out.
Once you know that, then you have a starting point. If you're going for your own horse, then Booboo's question is the one to answer: what kind of livery do you want?
Not all yards offer Full Livery near us, so perhaps your options will, to some extent, be restricted to what's on offer in the area in which you aim to keep your horse.
Hacking seems a must - again, near us, there are several yards with no hacking at all. If I were buying, I'd probably suss out all the local livery yards within travelling distance before I even looked for a horse, and work out budgets, etc.
But tbh, I would part loan, or fully loan before buying, just to test the waters.
By the way, I definitely do not think you're silly for wanting to get back into it. Unless you're solely after a happy hacker again, though, I'd factor in the cost of some lessons, and budget for that accordingly.
I do know someone who fell in love with the idea of owning their own DHorse though, and really struggled when she finally made the decision to buy one.
Having ridden & mucked out twice a week for a year or so, she thought she was well prepared, and that she knew what owning a horse would entail, but it came as a massive shock.
Good luck, OP. 