Welcome to
TG!
Force fields make force fields. Medical makes trauma kits, med kits, buffing stuff, etc. Explosives makes ammo, nades, and bombs. Optics recently got a name change I believe, and I'm not sure I remember what that does - perhaps weapons mods. Crafting was something most of us didnt fool with because it was undergoing so much tweaking.
But yeah, making a guide for it wouldnt really be wise until release. We can get a much better feel for things then. Hopefully they'll have the 'surplus' store active as well.
One thing I did learn while making my own Augmentation mats was that the profit margin is VERY slim unless you've got recipes for nearly ALL the mats, or have a source to give you the mats and/or recipes cheap. Nevertheless, there is room to make a few credits there if you've got the skill and materiel. It's an effect of the heavily tiered crafting system. One buff takes 3 mats and 1 recipe, and each one of those mats take 3 mats themselves and recipes, and so on and so on. Leave any mat/recipe out and your profit margin takes a dive. (moreso than I've seen in other games)
<sigh> Yeah, would be nice to have a guide wouldnt it... something we'll have to work on when we get in-game.