Twitter for librarians:

Signing up For Twitter account (video)

How to find people to follow (video)

How to use a Hashtag and participate in a chat (video)

Twitter for Educators: Step by Step

20 Twitter chats to follow

Twitter for Librarians:  Ultimate Guide to ideas/resources

Elementary Librarians on Twitter

Joyce Valenza list of librarians

Edchats on Twitter  (also #tlchat on Monday, #txlchat on Tuesday)

Other Chats:

TL NewsNight and TL Virtual Café (Monday nights)

Ideas for using Twitter and other twitter resources:

Let’s All Get Connected–reasons to connect

Teachers to Follow on Twitter

Librarians on Twitter

Young Adult Authors on Twitter

Tutorial on Teachers using Twitter

Twittering at Your Library

Introduction to Twitter for educators

26 Interesting Ways to Use Twitter

Twitter at the University

Ways to Use Twitter for Presentations

FailWhale website