Assassin/Ninja Help What point do I start not just using random gear I find

I've been playing Wynncraft for a couple days now and I'm Combat 50 as of posting this, and I've kinda just been using any gear that looks stronger than what I have now. I'm wondering at what point, so like what combat level do I stop doing this and check out some builds.
I've also got 2 side questions:
1. Any specific gear which could be better until I reach that point
2. How do you get emeralds, I've only got 5.5k right now and that's the most I've had at once

 

Do quests. Questing gives access to some very good titems as well as emeralds. Once you reach level 100 you can start to think about a build. As for gear. I would use morph to start. It is cheap and offers good survivabily and xp bonus.

 

lvl 105, that's when you use actual builds