Engineering is the best combined with Mining because you can farm most of the needed materials, and you will save a lot of gold. So, check out my Mining leveling guide if you want to level Mining before Engineering. But, the fastest way to level this profession is to buy everything from the Auction House.
If you are low on gold, I recommend you to try this Gold Making Guide, it can help you to make loads of gold.
If you are still leveling your character or you just started a new alt, I recommend you to use a leveling guide. You can level your character to level 110 in 8 days with this guide.
Learning Legion Engineering
First, visit your Engineering trainer Timofey Oshenko at Dalaran. Just walk up to a guard in the city, you can ask them where the Engineering trainer is located.
The quest reward is [Legion Engineer].
Most Engineering recipes are unlocked by doing quests. These quests are given by one of the NPCs around your trainer.
There are 29 Engineering quest in total, they are pretty straight forward, so I will not write down the details of every quests. Some of the quests lead you to dungeons but you can finish every quest easily in a few hours if you start them at 110, otherwise you will have to wait because later quests have level requirement.
You don't have to do every Engineering quest to reach 100, but you must complete All Charged Up. (Around 10th quest in the chain)
Most Legion recipes now have 3 ranks. Higher rank recipes allow you to craft an item for fewer materials. Therefore, you should only use rank 3 recipes when you can.
Rank 3 recipes comes from different sources like Vendors, World Quests, Reputation, dungeon drops, and even rated battleground wins.
If you hover over the little stars in your spellbook, you can see the source of the next rank for the selected recipe.
1 - 100
You basically have to make the following recipe around 140 times:
- 140 x [Gunpowder Charge - Rank 3] - 140 x Leystone Ore, 2800 x Oversized Blasting Cap
2800 x Oversized Blasting Cap cost around 3200 gold, but you might need to make more from these because this recipe will be green between 90-100. Buy these with shift+left mouse click.
Gnome characters have +15 Engineering skill because of their passive [Engineering Specialization]. An extra 15 Engineering skill means recipes stay orange for 15 more points, so you have to make a lot fewer of these.
Rank 1 recipe
You already have rank 1 if you finished every Engineering quest. It was a reward from All Charged Up. (you have to start doing your Engineering quest until you get to this one)
Rank 2 recipe
Rank 2 is sold by The Widow for 250 Sightless Eye at the Dalaran Sewers. Here is a detailed guide on how to get Sightless Eye. You can get the 250 in about an 15 minutes, or even less.
Rank 3 recipe
Rank 3 is sold by The Widow 500 Sightless Eye at the Dalaran Sewers. Here is a detailed guide on how to get Sightless Eye. You can get the 500 in about 30 minutes, or even less.
I hope you liked this Legion Engineering leveling guide, congratulations on reaching 100!