I don't see that any one else has mentioned the recipe books that you can buy in game.
Some of the merchants who sell specific tradeskill components also sell the books. These are where all the original information about tradeskills came (and still comes) from.
As others have mentioned you can go to eqtraders for very easy walkthroughs and guides and you get many of the basic recipes in the new tradeskill containers.
However it is still fun to buy some of the books and see if you can figure out the recipes for yourself. It also gives a feeling of some respect for the people who originally managed to figure it all out from scratch
As I recall the guide to fletching and bowmaking can be bought from the fletching supply merchants in Kelethin. These are not quite so cryptic and you will be able to make combines from them. The cooking merchants in the huts outside the entrance to Kaladim sell several cook books, these are a bit more challenging, but still fun to have a look at, to see what it was like to trying to figure them out to begin with.