If your planning to get into crafting i would definitely suggest crafting as a service.

It's a website for crafter and gatherers.

You can input what your trying to make an it will break it down into its base pieces and tell you where to buy them or where to gather them.

It's got handy info like what leves an what gear for certain levels and the such..

You can find it here: https://ffxivcrafting.com/list

Now if you have a team of friends to help you gather items i would suggest Teamcraft as you can make a shared crafting and gathering list that you can each check off the items you have till you have everything.

It's here: https://ffxivteamcraft.com