I need some help picking my craft

[Roth_Trailfinder]

If you intend to delve into crafting with anything remotely resembling some kind of seriousness, I'd have to say, work on all of the crafting, and both Mining and Botany.

Mining and Botany (and, to a lesser extent, Fishing, but if any can be skipped, Fishing can be skipped - its valuable, but not quite to the same degree as Mining and Botany) supply an awful lot of materials to all of the crafting classes.

Weaving, Leatherworking, and to a lesser extent, Carpenter make crafting and gathering gear for you to wear. Blacksmith makes most of the crafting tools, though Goldsmithing makes Weaver's needles. In addition to those needles, Goldsmith also makes the CP gear necessary for crafting.

Each crafting class (except Culinary) makes materials useful to one degree or another by other crafting classes. Culinary, rather than making raw materials, makes the food that you eat to help your Control, Craftsmanship, or CP.

Each crafting class has three Cross-Class Skills, available at 15, 37, and 50. Although most of the 37 Cross-Class Skills are garbage (the lone exception is the extremely useful Steady Hand 2 from Culinary) the majority of the 15 and 50 Cross Class Skills are quite valuable, either on their own or in conjunction with other skills. You will want those Cross Class Skills when it comes time to make anything for the Triple Leves for skilling up from 20 onward, or any time you desire to make HQ rather than just NQ stuff.

No one (except for SE) can speak towards PVP. They've hinted that some gear that won't make much sense to use in PVE is going to be rather powerful in PVP, and that such gear is going to be crafted. We will have to see ... but ... the most effective crafters are the ones who have the skills and the stats to make whatever they care to make, and you don't get that without going both wide and deep into your crafting classes.