If you do get in-lamb ewes, if you go for a more primitive breed with a reputation for good mothering instincts such as a Shetland or Jacob you probably won't need to intervene anyway.
I know I have suggested this before but how about asking a local sheep farmer to let you be his assistant at lambing time? It will give him extra help and you can get free tuition and see mal-presentations first hand. Once you and he are friends you'll have someone who's brains you can pick if you need to.
It's probably a bit late in the year to buy in-lamb ewes now anyway, you'd need a crash course in correct feeding, pre lambing vaccination and all sorts, that really would be an in-at-the-deep-end experience for you.
Go help a farmer and you'll be all set up for starting with your own sheep this summer or autumn.