Some suppliers for needle felting..

 

The needles we use in the kits and workshops are 36 gauge triangle(with the red paint on tip) this has three edges and larger 'barbs' and does more work, good for building shapes...38gauge star , this is the finer needle with 4 edges and smaller barbs, good for detail, and finishing off.

I prefer to use  the more coarser wools such as Shetland, Jacob, Cheviot, but you can experiment with different samples. Some people use merino , but it is very slow to needle felt( great for wet felting) If you want to combine fibres, or mix colours and shades you will need some hand carders for combing the fibres, or 2 small wire dog brushes will do. I recommend keep needling so your model becomes quite firm and holds its shape

Here's some suppliers of carded wool fleece for feltmaking

www.worldofwool.co.uk -dyed Shetland , natural Jacob, cheviot ,more breeds, fleece ,dyes, needles etc etc

wheeldalewoolcrafts.co.uk different types of hand dyed wool
winghamwoolwork.co.uk everything and more for wool lovers
adelaidewalker.co.uk various fleece /needles

www.norwegianwool.co.uk dyed fleece good for needle felting
feltmakers.com international feltmakers association