If you are a new teacher, the MTA offers you many opportunities to develop your craft and connect to other educators. You may find those opportunities listed on this page.
There is an MTA conference just for new teachers each fall.
Typically during around the first week in August, the MTA hosts a new member event where you can join other new MTA members for a week-long introduction to what the Union offers you as an educator. The weekend includes free lodging, meals, and lots of entertainment too and was held at University of Massachusetts in Amherst last year.