The first step to building your Twitter PLN is to follow lots of relevant accounts.
Don't be afraid to ask for recommended accounts and ideas!
This calendar, managed by @cybraryman1, @conniehamilton, @thomascmurray, @cevans5095 & @jrochelle is a great place to find chats related to your areas of interest. Join in or just "lurk", follow the hashtag and see what is being shared and discussed. https://sites.google.com/site/twittereducationchats/home