This resource is great for building a PLN. It includes a list of lesser-known social media networks that may be useful for building connections.

This is a great resource on getting started with building a PLN and how to use different forms of media to make connections.

This website has 50 ways to use twitter in the classroom, not just for connecting with other teachers, but also to engage with students.

This is a great list of 37 ways Pinterest can be used in the classroom from finding lesson plans to building connections with other educators.

This is a great resource with examples of hashtags for educators and the dos and don'ts of using twitter. It also has information on organizing your twitter and getting the most out of the account.