In addition to the comment that populated itself below, I want to add that this link contains a list of etiquette rules for Twitter that I think are very useful for a newbie.
Twitter has proven itself to be an indispensable tool for educators around the globe. Whatever skill level you may be, Twitter is downright fun and worth your time. So here's a useful guide that we curated from Edudemic's archives in an effort to put something together that was a bit easier to read than random blog posts.
Nice plain language account of online teaching from a happy veteran.
Michelle Everson has been teaching online for five years. Here, she shares the top 10 best practices she has learned about online teaching.