Where to get help?
If you are lucky, you may have a home pinball repairman near you. Finding him, will be difficult. Seach for local collectors in the Pinball The Pinball Collector Register, and see if they have a recommended repairman.
http://user.xmission.com/~daina/tpcr/index.html
How to fix games?
First determine if you are confident enough to do the repairs yourself, and if you have the ability and basic knowlegde. Safety first. You may choose to simple things like cleaning, and minor switch adjustments, but seek help for major repairs, or complex repairs such as fixing circuit boards.
The PinWiki is a great source to start for information, and it is free. http://www.pinwiki.com/wiki/index.php?title=Main_Page
The most common used resouce, is Clay Harrell's pinball repair guides, but finding a copy may be difficult.
Where to get parts?
A lot of places now offer pinball parts. To start off, here are the places I would check first:
Stuff recommended for your machine:
Remote Battery Holder
http://www.pinballlife.com/index.php?p=product&id=1783
Common light bulbs
http://www.pinballlife.com/index.php?p=product&id=28
http://www.pinballlife.com/index.php?p=product&id=1680
http://www.pinballlife.com/index.php?p=product&id=31
Flipper rubber:
http://www.pinballlife.com/index.php?p=product&id=79
Slingshot rubber rings (2”)
http://www.pinballlife.com/index.php?p=product&id=434
Cleaning stuff:
Novus 2
http://www.pinballlife.com/index.php?p=product&id=370
Neat stuff
http://www.pinballlife.com/index.php?p=product&id=1260