Sorry this is a very basic question, but how do you join a class here, I thought you just worked through lessons yourself! 

You just start from here : http://www.turkishclass.com/turkish_lessons_1 

Merhaba,

In the first make aplane like you should start from lesson one and study it make asummary for all the lessons.

make an revison every week,dont forget the homeworks

and any thing difficult in lessons you can put your quetions on the forum

Thank you

If you´re a complete beginner, you can also go here and start studying lessons and doing homework assignements in Beginner 1 class:

http://www.turkishclass.com/turkish_learning_group_3