I have os 10.6.8 and want to upgrade to latest, do I need to start with 7, then 8 or can I just go to the most recent one?
You can go to 10.9 directly if your computer's compatible with it.
How do I check to see if it is compatible?
Just try downloading it. If it isn't, the download won't be allowed.
Here are Mavericks system requirements:
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