Here's a link to a video where a teacher is explaining all of the various ways you can use 'get' in phrasal verbs. It's informative and I hope you can learn something with it. I like it because the slang forms are also covered and this is something all students like. http://www.youtube.com/watch?v=N6f6gPG3p60 Once you watch the video, you can take a little test to see if you really understood the meanings. http://www.esl-lounge.com/student/phrasal-verbs/4pv17-get.php. If listening to the explanation isn't enough, then try reading it. Here's a link to help http://www.5minuteenglish.com/apr3.htm
If you happen to be a teacher, here's a link to a page with a fun exercise for students. It's called 'the get report' so you have to scroll down the page a little to find it. http://www.teach-this.com/resources/phrasal-verbs If that isn't enough practice you can find more exercises here, http://www.learnenglishfeelgood.com/esl-phrasalverbs-toget1.html, http://www.learnenglishfeelgood.com/esl-phrasalverbs-toget2.html I would copy them to a word doc and print it out for students to do in class. Of course giving it as an online homework assignment isn't a bad idea either.
If you are looking for a wider variety of phrasal verbs, not just 'get' check out Lanternfish. It's one of my favorite websites. http://bogglesworldesl.com/phrasalverbs.htm
Okay, get down to business and teach something now! :)