how to buy a boxster

[newbie21]

Hi All.

I am looking to buy a boxster, budget about 21000ish. I would appreciate some advice on what to look for. My questions are:

Should I get it inspected even if its from a respected dealer.

What are known problems?

what is the maintenance schedule from 30000 miles on.

Also are there any tips on buying. Sorry for so many questions but Im a newbiew to porsche and want the expierience to be as goosas possible.

Thanks in advance for any replies

Regards