Hey everyone. I am new to the forum and new to the Mac computer world. I've used an iPad and iPhone for years now though. My wife bought me a refurbished iMac G5 PowerMac processor with OS X Leopard. So far, I love it! However I have a few questions. If I see a program that's been updated for Lion, can I still download and use it? Or do I need to download an earlier version as its too "new"? Also, are there must have programs I need or think I may want? I look forward to learning the Mac so I will be advanced when I update! Thanks people!