You start by getting every class to 15. The first set of CC skills is at 15. This takes less than an hour / class.

To get any craft to 15 just do every recipe once. The guild shop sells everything you need, except the cooking guild doesn't stock fish, you buy fish at the Hyaline just off the aftcastle. The guild quests provide more than enough shards. Check with the local levemete before you dispose of the stuff you crafted, some of it will be levequest fodder.

Your GC will have provisioning and supply missions after you hit Sgt. or Sgt.2 which will give you EXPs and comapny seals.

Also you want to start the Ixal beasttribe quests, they are crafting quests.