If you’ve come here to look for a guide on crafting and repairing: I’m currently working on a massive revamp of the page that will include a lot more details. In the meantime, I can wholeheartedly endorse this guide that does a kick-ass job at explaining crafting and repairing. It also includes a pretty great leveling guide (full review available here).
As you gain levels, you’ll get more skills to make the crafting mini game more interesting, and like DoLs, some skills can be shared with other disciplines of the hand. You may want to check out some of the other skills, the other crafting classes have, as it’s relatively easy to get them to level 15. You just need the shards and the vendors tend to sell all the low-level crafting.
To level effectively, I recommend making friends with some gatherers, utilizing the market board, and using the experience bonus scroll from the grand companies that you’ll get access to around level 20, and turning in high quality items for your guildleves. Try to get as much experience as you can crafting items whose reagents are sold by the vendors before getting into the higher levels where you have to gather shit yourself. Beyond level 25 and above it gets pretty difficult.
Also note that the guildleves for the professions are only in the associated city; for example, you get armorsmithing in Limsa Lominsa, so you’ll only find armorsmithing guildleves from the adventures guild in Limsa Lominsa.
Also note that repairing gear for your respective discipline of the hand grants small chunks of experience; for example, a goldsmith repairing earrings will give experience based on the amount of durability repaired and the level of the item. And come launch, you can repair other people’s gear, but it costs materials, so you can always whore yourself out next to the repair NPC and offer free repairs to get free experience.
That’s it for the basics of leveling Disciplines of the Hand and Disciplines of the Land. Now, this can be very time consuming, but it’ll be worth the effort when you save yourself tons of money by self-repairing, and it is mandatory down the road for material melding.