You got a good deal on it and a great starter learning pin. Looks like you already put new rubbers on it, agree with others clean and waxed the playfeild and replace the ball. There are some really good repair guides on the Internet read up on them. On your displays you will probably just find cracked solder joints easy to fix. Same on you driver board recap it and check the back side of the board and reflow bad and or cracked solder. The biggest thing I find is connection / connection / conection. You will learn how to repin connectors and how important a good conection is.

But mostly enjoy it playing, learning and fixing.