...I would apprechiate help with removing the valves if you please.
If you're going to start messing around with gas bottles you're going to need a few tools. Beg or borrow a large adjustable spanner for example. I have several of different sizes, and I use them all some time or another. What fits one bottle might not fit another because as you've probably seen by now there are all sorts of different styles of valve and valve protection/handle on bottles from different manufacturers.
If you look carefully at the thread on the valve (there should be at least a little bit sticking out of the bottle) you can tell if it's left-hand or right-hand threaded. If you can't tell, guess at right-handed, especially if it's a butane cylinder.
You might need to juggle with the spanner a bit to fit it on the valve and have enough room to turn it a bit in the right direction, but it's usually possible. Pipe wrenches like Stillsons are usually a bit bulkier than adjustable spanners so they tend to make things more difficult in confined spaces. On the plus side, they'll grip on just about anything. There are other tools that can do the job too, and very occasionally I'll have to make something up, but you'd probably need welding set for that so it's getting a bit silly unless you're planning to go into production.
You might need to find a way of holding the cylinder to stop it turning. You might need to put a pipe on the end of the spanner if you aren't strong enough to get the valve loose, but don't break the spanner and try not to skin your knuckles or otherwise hurt yourself!
Obviously don't take the valve off a bottle that still has any appreciable amount of gas in it, and obviously do it outside, away from naked flames, sparks, etc. If you can have a friend with at least a bucket of water and some first aid training and kit standing by (not too close by) to render assistance, so much the better. This is not a job to be taken on lightly.
I don't want to know who owns the bottles.