In trying to familarise myself with btc wallet, so that I am not asking so many questions, I started reading this https://en.bitcoin.it/wiki/Wallet#Bitcoin_Qt

I created a second bitcoin wallet today, by going to the bitcoin folder, removing the wallet.dat that was there to another location, and renaming it. (I also copied it onto two flash drives so I have a backup)
I opened the client again, as described in the guidance I received above.

I am querying, though, because, when I read the page linked above, it said the following:

It is intended that a wallet be used on only one installation of Bitcoin at a time. Attempting to clone a wallet for use on multiple computers will result in "weird behavior"[2].

I'm not cloning a wallet for another computer, just creating one to put my new btc in, as the old wallet is locked due to lost passphrase.

Can I just confirm that, this is ok, and also, that when I want to view the original wallet (still trying to put passwords in the hope it opens it) will I just go to the file I renamed, and put it back in the btc folder?
There will be two wallet data files in there now, one for each btc wallet.

Oh, and if anyone can point me to some general help information on qt wallet for me to read, I would be grateful, as I am struggling to find it online.

Thanks
Thanks