I'm still very much a novice but can tell you how i've set it all up so far - it's always being added to:
Each field (minimum 3 fields so the grass has a chance to rest) fenced with sheep stock fencing. Each field has a sturdy wooden sheep shelter. Site the shelters so that the sheep can use all sides as protection from the elements from outside too, eg, not in a corner. If you can make them large enough to use as lambing sheds, so much the better.
Get some metal hurdles as per the photo posted by feldar, these are easily moveable and i wouldn't be without them. If lambing early (when the weather is cold) i prefer to put the ewe which is about to lamb inside into a large pen so i can make sure she is out of the elements and can pair up with her lamb/s once born. Also if there is a problem (!) they are penned making it easier to attend to them.
Water: I have small autowater troughs. The sheep don't appear to drink much so smaller is better to help it remain fresher. Clean the trough out regularly.
If you have a barn/building which goes out straight onto a field use that as your lambing shed. This is where the hurdles will come in handy. Make sure this building is light and airy and has electricity and water (mine is still work in progress). If you can, put CCTV in there, then you can check them frequently from the comfort of your armchair. And if you miss a lamb being born it will record, so you can play it back and not miss a thing. This is also good to observe how a ewe reacts and then you'll know what to look for when they are out in the field.
Books - get some and make sure you read them.
Courses - sadly none anywhere near me or i'd have done several by now - if you can, get yourself on one.
Best wishes.