Here we go...
Making items depends on two factors:
1. What gives the best skill ups (orange always gives a skill point, yellow usually, and green sometimes-rarely; grey never does).
2. What herbs you have available (this will vary with your level).
I don't mean to sound condescending, but alchemy is a very ongoing process, albeit a pretty easy one. In truth, there's no reason to rush through it; for one thing, you can't get above 225 until until you're at least level 40. Second, you can't make high-end potions until (gasp!) you're a high level. Why? Because you can't find the herbs. By the time I was level 40 or so, I needed Sungrass terribly for my potions. By the time I was 50, Sungrass was a weed; it was everywhere, and next to worthless. These pages keep that in mind: you don't need us to hold your hand, just to point you in the right direction. You need herbs to make potions; these tell you where herbs are. To get the recipes? Go to the AH or a trainer. What you should make depends on the two things I've listed above.
Also, few people will tell you what to make 1-75... because everything you'll want is in your faction's zones. There's no risk of dying by gankers, and all the potions are really easy to make.