Here is the thing about Crafting, you don't need it until End Game (post CP160) but you can level it in preparation with few to no skill points invested. Crafting can eat up 122 Skill Points to fully invest, so this will gimp your combat while leveling. Best to invest as few points as possible while levleing your character and crafting.

Equipment Crafting

Decon all mob loot other than what you are using to research traits. Research traits, learn two on all items you would use, then learn 3, etc. Focus on Divines, Infused and Training for your first three for Armor, Sharpened, Precise and Training for your Weapons. Then go for the other ones. Nirn is expensive, and a lot of people suggest putting a priority on that, I can't see why. The Trait is all but useless for Armor or Weapons. Best place to find Mob Loot is Public Dungeons, then over land grind spots. Grind on mobs until your bags are full, then go on a decon fest. Remembering to save the ones you need or want to research. Use the Lock Function and or an Inventory Mule to hang on to those. Only invest Skill points while leveling it into the Research and Extraction Passive, the last really only needing one point.

Enchanting

Ignore all the "advice" on the web about using an enchanting partner. First, use Mob Loot decon to raise this up to a point. Later on as you approach end game have some some gold, then start making Green, Blue or Purple Glyphs on one character and decon them on an Alt. You will level Enchanting faster than trading the glyphs with another player, which is tedious by the way. (like pull out your hair and make a doily tedious). Use Green up to about L15 in the Enchanting Skill, Blue up to about L30/35 and Purple up to about L46/47. Then learn the runes you don't know, you should be at or near 50, if not, make/decon some more Purples.

Provisioning and Alchemy

Don't worry about these, you can level these professions in about an 20 minutes, for both. Just collect the Various Solvents and Reagents and Provisioning Ingredients/Recipes as you go along. Once end game, then you can level it. Use Mushrooms to level Alchemy, or Flowers that make potions you won't use. Make sure you grab solvents (waters) as your leveling as they can be rare to find in the guild stores. For Provisioning, make the highest level Green Recipes you can make. Blue or Purples do not give any more inspiration than Greens, so save those for character use.



Yes, use Drop Sets for now, and Yes, level your crafting skills and do the Trait Research. Traits are why you craft as they allow you to make Special Crafted Sets. There are two sets in the game that your going to want to make, Julianos for your Magic Characters, and Hundings Rage for your Stamina Characters. There are no better sets in the game to have 5 pieces of. Period. Well, Twice Born Star is great to, but your a year out from making that. But you need to start learning your traits now.

Leveling Equipment Crafting is easy, just decon the mob loot you are not either selling to cover repairs or using to research traits. No skill points needed while leveling it, other than maybe a point or two into the Extraction Passives.

Back to the Crafted Sets, it takes 6 traits known to be able to make Hundings or Julianos, 9 Traits for Twice Born Star. You don't need to know these traits on everything, but you do need to know them on the items you will use. So, start learning those traits. Focus on the gear you will use first, then fill in the rest later. This means:

Casters
Heavy Chest/Legs
Light Feet/Hands/Waist
Shoulders and Heads are good to, but there are 2 Piece Monster sets that can take up those slots. So learn the traits on these pieces, but prioritize the ones above.
Staves (all 4 of them)

Stamina
All Medium Armors
Daggers, Swords, Bow and Shield

Learn Training, Divines and Infused on the Armors first, Sharpened, Precise and Training on the Weapons. Powered is good for the Healing Staff, Defending is good for Sword or other one handed Melee. Then fill in the rest until you have 6 or eventually 9 traits. Some people recommend Nirn as an early trait to learn. Unless they change it, don't listen to them. You might use it on a Shield or a Weapon but that is about it. You need it someday, but it's expensive and you need your gold for other things.

Invest the skill points into the Research Passives. I can't stress enough how much of a time sink Trait Research is. Be able to learn more than one at a time, and reduce the time needed. Get an addon for Trait Research Tracking, I recommend Craft Store. If your on the Consoles, find one of the spreadsheets out there or make one to track this. Have I mentioned you need to learn your traits?

Doing this you will be ready to invest skill points into Crafting when it matters and not have to spend months getting ready. Did I mention Trait Research and how much a time sink it is? The last two traits will take you a month each to learn, on each item you learn them on. Get started now, yesterday would have been better.

You can craft while leveling, and crafting for your next leveling character makes that whole process easier. Its just leveling your first character trying to make them combat capable and be a competent crafter takes lots of skill points, or, grabbing skyshards to invest in the trees. It can be done, but its a hard road to follow. At least now, you can get skyshards from the entire map. Back when I was leveling my first character, I only has sky shards and skill points from the 5 zones in my alliance. Very rough to level crafting and character at the same time.

Basically, the only real way to level crafting and have a character that can do combat effectively is to split crafts amongst a few characters. Unless of course your going to go out and find all the skyshards right away and do some or all of the zone main quests. However, ultimately your going to want to combine all that crafting to one, maybe two characters. Probably one given motifs can be expensive to acquire.

I only point out that it is more efficient to get your crafter up to about 160 to 180 skill points as a combat character while leveling crafting, then turn them into a full fledged crafter who can do some combat for farming and getting to remote crafting stations. Then your Alts will benefit.