Recently I've discovered a new periodical for ESL/EFL teachers. It's called ELT Weekly, and it's described as "India's first weekly ELT e-newsletter".
Some interesting content, including articles, ELT news and events and weekly features, such as book of the week, ELT blog of the week, and even ELT cartoon of the week.
This week's edition features a new article I wrote, titled "A Creative Approach to Lesson Planning". You can see the article here:
I would also recommend you read Mario Rinvolucri's blog, featured as this week's ELT blog of the week.