Weakness: In the bidding, I can bid too fast or not thoughtfully enough.
Strengh: My defense and table manner.
Good tip to beginners: 1) (And most importantly) HAVE FUN! YES, it is good to aspire to play well, but make sure you enjoy yourself. =)
2) Counting. Counting the opponents hand and points, counting your partners hand, and trying to interpret what is happening in the play.