I would agree that it is wise to avoid games with "demon out-lanes" like BSD and LOTR but besides that almost anything goes. It you are a beginner just alter the game settings, by this I mean check the software difficulty settings and you will find you can adjust ball savers, extra balls and the number of balls etc. You can also move the out-lane posts on many games to make it easier or harder.
Don't make it too easy though or you will kill the game. Pinball should be a challenge.