After doing some searching I was able to find a good list of items that you should consider doing every 30k miles. If you are unsure about how to do any of these I am sure you can find some good tutorials out there on the net. Anyways the list I saw suggested these items
-Replace fuel filter
-Change spark plugs
-Check and replace worn belts
-Check all fluids under hood
-Change Oil & Oil filter
-Clean battery terminals if necessary
-Replace air filter
I know there are many other things you can do for a tune up, but these are relatively easy and will get you started.