The Japanese word joseki is used to describe a pattern frequently used in corner play early in games. In that respect is is something like the concept of "gambit" in Chess. However, the outcome of a joseki is supposed to offer a good result to both sides.

Diagram 1 shows a joseki that is commonly seen in handicap games. Indeed it is usually the first sequence that beginners learn. It is known as the tsuke-nobi joseki from the Japanese words for 'hit' and 'extend'. Black approaches the corner with 1, and White 'hits' that stone with 2. After Black 3, White 2 'extends' towards the centre.

It's really worth learning this sequence, you are liable to find it in nearly every handicap game you play.

You can read more about this in the article at Sensei's page on this joseki. Sensei also has many other fine pages on joseki.