Hey guys, new here! Just got a Macbook for dirt cheap because I have been wanting to try out OSX for a good while. Its a early 2008 Macbook white with 10.5.8 installed. Has a Core 2 Duo 2.1ghz and 1GB memory. First question is, how can I update to the latest version of OSX that is compatable with this notebook. From what I understand my macbook will not support 10.8 Mountain Lion, but will support 10.7 Lion. 10.7 does not appear to be available for purchase on apples website. Also, is there a way to install a completely fresh copy of the OS, this notebook currently has loads of programs and files and seems to be bogged down by it, so I wouls like to start fresh if thats at all possible? Second, the battery is dead in this notebook (part of why I got it so cheap). I see that there is a lot of batteries on ebay for around 25 bucks, but I am not sure if these are crappy off brands that will just die again in 6 months. Do I need to buy the official replacement from Apple.com, or is there a cheaper alternative? Finally, I plan on ordering some more RAM, it looks like it currently has 2 512 sticks. How hard is it too upgrade the memory yourself, and how much would be optimal./supported if I plan on trying to upgrade to 10.7 Thanks for any help, sorry for the newbie questions!