In ROM, profession term is rarely used. The term "crafting" matches what you are talking about.
There are several types of crafts.
1) Gathering crafts. Wood, Ore and Herbs allow you to process raw materials into forums usable for later stages.
2) Planting. Planting is another way to get materials. It is useful, since only other way to get materials in quantity is pet gathering. Hand gathering is very very grindy.
3) Consumables. Food and Alchemy let you make buffs. Very useful and good steady money maker. Not huge profits, since there are a lot of people doing those.
4) Gear. Blacksmithing, Carpentry, Tailoring and Armorcrafting. Gear is very much a specialist area. Crafted gear can be good, but usually secondary to instance drops. And for every wonderful piece of gear you make, there will be dozen of so-so or worthless items. Also, really profitable gear needs rare materials to make, obtainable in instance runs. So, do your homework before you invest money into leveling your gear crafts.
Overall, I would say Consumables are way to go. Steady stream of income is good. But, there is a problem, sorta. You can level 10 crafts to Level 20, 6 to level 40, 3 to Level 60 and one beyond. So, if you are planning on taking your crafts past L60, you will not be able to create materials for your crafts. Most people level alts to do their wood, ore, herb; and that is the type of thing you want to plan relatively early so you don't end up dead ending your crafting levels on toon that wont serve you long term.
-- Rustyx --- 92R / 92S / 92M on Reni (Guild KnightShift). Yes, running the new FOTM R/M, cause I am not elf enough to be WD/S.
Oh, and people who have more than 3 classes are clinically insane.
