Hello, as tittle, please be patient with me and I'm totally a newbie and this is the 1st macbook in my life, previously I'm window user. I just bought a second hand macbook 3, 1. Currently running mac os x 10.5.8. What the is latest os i able to update ? I've Google and saw some post mention it only can go up to 10.7, is this true ? And, how to type chinese pinyin ? Why my wifi keep suddenly disconnect and when try to reconnect, it show me "Connection time out", may I know what's going on ? I'm totally lost. I really need help from professional. Please help me and I willing to learn more. My email address, firstname.lastname@example.org . Thanks & Regards, Bosco.