Hello, I have a MacBook Pro5, 3, using OS X 10.6.8. I think I may have gotten it new in 2009. I have the iphone 6 Plus coming and I know it'll have all this new fancy software. I've never been able to use iCloud cause all my software's too old, and besides I figure it's time to upgrade my Mac software so everything will work more smoothly with the iphone and vice-versa. Can I just download the latest thing? What is it...Yosemite? I thought I read somewhere in the past that you can't just jump ahead like that - that you have to get the software you missed, before getting the latest. That seems silly though (hopefully I misunderstood what I'd read)! I just don't know what to do and googling didn't give me any results. I backed everything up on my external HD as a first step, but now what? I also see that there's this Mavericks. Do I get that? Now, or after upgrading to something else first, if at all? Sorry to be so danged ignorant. Thanks!