Alchemist 1-30 (an ongoing compilation)

[Rimmer]

I found levelling alchemist incredibly cheap and easy to level up, gathering all of the materials you need to level up is indeed very possible on Alchemist.

1-10 Distilled Water.

10-20 Salt. Equip a fishing rod and a chocobo lure then fish at limsa docks for malm kelp. Create the secondary reagent with Culinarian.

20-23ish I did a mixture of Jellyfish Humours, Poison Powder & Maple Syrup.

23-36 Maple Syrup(This was a long road for me, but i wanted to do this as cheap as possible)

34+ Lanolin+Maple Syrup. Do Lanolin as much as you can, farm sheepskins if you need to.
You can also fish Hammerhead Sharks at the Ferry Docks on ul'dah side with a spoon lure around lv20 Fisher and then turn them into Water Crystals.

36//37~ Disabling Powder/Disabling Potions(Its a rough synth, but its fantastic sp, farm dart frogs near emerald moss from spearfishing nodes)

Still currently doing Disabling Potions/Powder recipe at 43 for 350-400+ SP (Fatigued).
Or you can move onto Heart Drops/Reviving Salts Recipe, it should take you all the way to 50, thats what im planning on anyway.