How to play PSX games on a PS2?

[something86]

So I just spent another 50 bucks on another copy of Grandia. I really would like to make a backup of it.

A few things:

• I no longer have a PS1 console. I have a slimline PS2- will it play PS1 backups?
  
  
• What type of cd do I need? I know it's supposed to be cd-r, not cd-rw, right? But does the brand or anything matter? Also, I know this sounds stupid but will it work on the ones that say "Audio CD", like the ones with 80 minutes? Or do I need some sort of cd that only holds data?
  
  
• I haven't found a current guide. I've seen old ones from like 2000-2004 for CloneCD but I really don't wanna buy it. So if anyone knows of a great, free program (or one with a free trial) and a more recent guide on how to make a backup with it, that'd be great.
  
  
• Is there a way to be sure that a game you just bought definitely works all the way through, with no skips? I hate buying a copy only to find out it freezes at one part continuously. Does it even work if part of it doesn't play?
  

If you know of how to do this just point me in the right direction please! Thanks