One of my sewing friends alerted me to an extremely good value offer for an annual premium membership with Craftsy. They gone through some problems recently with various takeovers and customer service difficulties, but if you're new to them (or don't have a current membership), it's an excellent online resource. The premium membership is normally $80 per year and the offer price is $5 for the year. It's not just sewing - there's knitting, decorating, painting, cooking, etc.
You do need to use facebook to get hold of the offer, although when I went through it did apply a particular coupon code. I can't use it yet as I've bought classes from Craftsy in the past and they automatically gave me a premium membership until 16th October. If I can get a good price, I will renew then as I haven't had a subscription in the past and there are some classes that OH would like to use.
It seems that to get the code/invitation, you need to look at Craftsy via FB; you probably won't see any offer (I didn't) but then the following day, it will appear in your feed. I looked yesterday and found nothing but had the offer today.
If you already have an account with them, or a taster membership in my case, you won't be able to renew until your current one expires.