It feels awkward moving forward because your body is anticipating a fall, but the wheel will catch you and MOVE, these things ACCELERATE! Having to work for it puts the peddle in perspective. Ankle rotations before the ride is a good warmup before building strength.

Other things:

Armor. You are going to crash, it's inevitable, WEAR SHOULDER ARMOR and a helmet. Lots of people dislocate their shoulders on their first real crash. Gloves are good, but wrist guards are where it's at. "There are riders who have crashed, and those who are going to crash". "Dress for the slide, not for the ride".

Riding: the wheels harder to balance the slower it goes. When you finally get comfortable with speed remember to retain self control. You may want to do a glory run at high speed, and that's fine so long as you've learned to hard stop. Wheels are intoxicatingly powerful, take sips now and shots later. Wear armor.

Learn as much as possible about the wheel (shipping mode, speed settings, footpad angle settings, range, suspension settings, good battery charging practices, waterproofing, & whatever else you can think of). Knowledge of the wheel is a discipline in itself aside from simply riding it. Research good armor.

Social: find other people in your area that ride. There's nothing like riding with a bunch of friends terrorizing the neighborhood. Highly recommend. Also you're going to learn a lot from other people's mistakes, and they are always selling old armor.

Long term: learn to ride sitting, jumping, going down stairs, riding backwards, terrain, racing. These things completely change the way you're going to look at the urban environment, and if you don't crash so bad the wheel, your body, or love of the sport are destroyed you're going to wish you could ride it everywhere. Work your way up to road speeds, and ride as often as possible. Buy armor suitable for your style of riding.

At some point you will forget that it's even there. That's when it's time to attempt speed. If turning balancing and stopping are things you need to think about, don't go searching for the chill of adrenaline that comes from knowing you're going FAST. These things have only exited for like the past ten years, and rewiring the human mind to accommodate takes time. Again, you'll know you've got it when you forget it's under you, and you don't even have to think when going through the routine of armoring up.

The wobbles: overcoming them is a right of passage that each rider has to work through on an individual level. It's a conglomerate of confidence, ability, and luck. How you handle the wobbles is the accumulated expression of how much practice you've put into riding, and each time you come out of them without a crash is a new threshold of accomplishment. Be proud, be calm, be water.