These are my tips for getting the most benefit out of using Twitter
1) Build your network of people that you follow and make sure to especially follow those that you might not agree with. Keeping an open mind and challenging your current ideas is a vital part of reflective practice. I have found Twitter invaluable for giving me ideas and for me to share my own! You might also want to follow any experts in your field of teaching and learning.
2) Use Tweetdeck to aggregate a flow of news so that you can follow topics of interest using hashtags. This is my general list of hashtags and the ones that I use mostly are highlighted in red. Other Twitter users might have collated lists of Twitter users in certain fields and I certainly make use of the lists provided by Tutor2u (I like to look at their Business Studies Teachers on Twitter list as well as their list of economics teachers)
3) Participate in a Twitter chat on topics of interest - these are normally held at a certain time on a regular schedule and you can share a lot of ideas about teaching and learning. I personally like ones that are in the morning and on weekends so I can dedicate some time to sharing ideas.
4) Use Twitter in class, this could be a simple Plenary at the end of a lesson, it could be the sharing of resources, quizzes, news articles, it is a very simple way to give links out to students on the fly and saves having to post them all up on your school Virtual Learning Environment (VLE). You can also run simple polls with student favouriting or retweeting to vote / show an answer to even tweeting an answer in reply. I like the ways that Twitter forces students to summarise and distill their ideas.
5) Share with other school stakeholders; parents and guardians can follow your school Twitter accounts to get a general idea of what topics are being covered in class or what is going on at school. Twitter can very easily be linked to school websites of blogs to give a live feed of information!