'To get' can be used in a number of patterns and has a number of meanings.

TO GET + direct object = obtain, receive, buy.

Examples

I got my passport last week.

TO GET + place expression = reach, arrive at a place.

Examples

How are you getting home tonight?

TO GET + adjective = become, show a change of state.

Examples

I am getting old.

TO GET + preposition/adverb is used in many phrasal verbs.

Examples

This rain is really getting me down.

TO GET has a number of other meanings:

Examples

• Do you get it? (= understand)
• He's getting dinner tonight. (= prepare a meal)
• I'll get the bill. (= pay)
• That really gets me! (= irritate, annoy)

Other expressions with GET:

Examples

• To get rid of something means to throw it away.
  Example: I'm going to get rid of all these old newspapers.
• To get out of bed on the wrong side means to be in a bad mood.
  Example: He got out of the wrong side of the bed this morning and he's been horrible all day.
• To get your own back means to have your revenge or punish someone.
  Example: She's getting her own back for all those rude things you said at the party last night.

Retrieved December 5, 2012, from http://www.edufind.com/english/grammar/get.php