What e-textiles or craft technology should I experiment with as a beginner?

I am familiar with Arduino for a while, but I haven't do anything with textile before. So can anyone give some advice?

1, what stuff should I experiment first? muscle wire?
2, where I can get more information about this?
3, where I can know more about wearable equipment information?
4, is lily board a must?

check out the book "MAKE: Wearable Electronics" by Kate Hartman. It's a great primer for those just starting with e-textiles. You can find it on Amazon.