Metalsmith, Prospector, Tailor
Tailor, Forster, Prospector
Weaponsmith, Prospector, Woodworker
Jeweller, Prospector, Cook
Woodworker, Forester, Farmer
Scholar, Weaponsmith, Farmer
Every vocation in LOTRO is a set of three skills that you can master. You are to choose one vocation out of six. The set of skills that you get in each vocation determines which materials you will be able to gather yourself and which will have to be bought from other players or NPC. For example: as an Armsman you can gather ore on your own, because you have the Prospector skill. On the other hand, you won't be able to gather wood, as this requires the Forester skill. Thus, whenever you'll want to use a Woodworker recipe, you'll have to trade for materials. In the next part of the guide I'll tell you about production process for each skill. First let's deal with the basics, though.
When you finish your second instance in the game and are free to wander around Middle-Earth, you'll get a crafting-based quest from one of the NPC near your starting location. That is: Alf Goodcliff in Little Delving if you're a hobbit; Bogi Deepdelver near Thorin's Hall gates if you're a dwarf; Mibrethil in the southern part of Celondim if you're an elf; Edward Carver near Archet if you're a human. Details apart, this quest is to find a Master of Apprentices and learn a vocation. You can find such character at every bigger market place, for example in Michel Delving, Combe, Thorin's Hall, Celondim. When you talk to him/her, you'll have to make a choice on which vocation you want to learn. Should you decide, you'll also get the basic tools you need for all three skills you gain. If you want to, you can immediately switch to better ones by buying them from one of the local suppliers.
Generally speaking, to create a new item you need a recipe (you get all the basic ones as soon as you choose your vocation), its ingredients, a tool, and a specified type of workplace (oven, workbench, forge). Every time you use any of your crafting skill, you get experience in it. Gather enough of it and you'll advance in rank and be able to execute better recipes.
HINT: In order to execute a particular recipe, you must have the appropriate tool currently equipped. Remember about it, because sometimes it's easy to forget to switch from a mining pick to a smithing hammer.
HINT: When you have a skill that's based on gathering resources (such as foresting or mining), you also get a passive ability that you can use to mark their location on the mini-map. This won't get the job done for you, but is still a great help.
HINT: All the workplaces are marked on a mini-map with a golden anvil.
Farmer's work is divided into two phases. The first one is to plant seed and gather the crops. In order to do that, you have to buy all the ingredients pointed in the recipe (from an NPC called a Farmhand) and find an appropriate field (appropriate for the type of plant you want to cultivate: pipeweed, grain, vegetables). When standing on a field, open your crafting panel and push the button that will start the process. In a few second you'll be able to gather the crops. Now you can transform them into final products by using the Workbench. You'll need Farming Tools for all of that.
When being a tailor you mostly need leather. The easiest way to get it is to hunt, obviously. You can work it using the Workbench, and using Tailor's Tools. Additional materials can be bought from NPC Tailors.
As a cook you process materials into tasty food that can be later used to get positive buffs during combat. Materials can be bought or prepared by a farmer. You need an Oven or a Campfire to execute a recipe. You also need Cooking Supplies.
Metalsmith's work is to work on metal ingots in order to form them into armors, helmets, boots, shields, etc. You need a Smithing Hammer and a Forge for that.
A Prospector is basically a miner - he finds ore deposits and extracts metal using the Mining Pick. Later, he processes the ore into ingots at the Forge.
A Forester gathers wood in forests, then processes it into a form that can be used by Woodworkers. He uses Forester's Axe as a tool and a Workbench as a crafting location.
Weaponsmith uses metal ingots (made by Prospectors) to create weaponry. He works in a Forge, and Smithing Hammer is his tool.
A Woodworker creates weapons that are mostly made of wood, such as bows, crossbows, staffs. He needs support from both Prospectors and Foresters. He uses Woodworking Tools and a Workbench.
A Jeweller works on precious stones and metals, creating jewelry. He uses Workbench and Jeweller's Tools. Materials for jewelling come mostly from Prospectors, but some can also be found in random loot.
A scholar produces scrolls and potions using ancient relics and other peculiarities. Most of them can be found in ancient ruins (they are therefore much less common than ore or wood deposits) in objects such as Urns. Sometimes they appear as random enemy loot. As a Scholar you don't need a workplace, only a tool - Scholar's Glass.