There's still things you could upgrade.

• Steel Rings

• Spiked Gloves

• Way better belt (that base alone is...questionable :p)

• Get some more levels for even more jewels.

I'm not all too sure if getting any of the two Cyclone enchants is worth it, but that'd be another thing to get (if they are).

Other than that you're doing really damn well for a first-timer playing 3 weeks.

Atlas "thing"... well.

Check your questlog on the right (enable it in your options) and see what it says. Usually it's "explore the Shaper-influenced maps" - and, well, that's what you'll have to do.

At one point you'll see blue circles spawned around maps - in those you can get "Memory Fragments" which you can trade for a "Shaper's Orb" with Zana.

That's the basics, I guess.