To try and answer your question on being with him and bonding, Margie: work with him as much as you can. The more consistently you're around and interacting with him, the quicker you'll start to feel comfortable with each other and learn each others' ways. The more you can hang out with him and study him, the more you will be able to understand how he reacts to things and to start pinpointing specific areas you want to improve in his training.
Now, since you mentioned you're willing to learn and will be getting a trainer in due course, may I mention a few things:
1. Halter - you may find a rope halter is more beneficial as it provides more "bite" (figuratively, not literally) and therefore provides more precise communication with the horse; flat nylon halters are nice but for the exuberant horse, its easy to run through them. If you go with the rope halter, do not leave it on when he's on his own as they don't break and can cause a serious accident if he gets caught on something.
2. Lead line/rope -- I can't really tell from the photo if you have or not but do not wrap the rope around your hand as it can be pulled tight quite quickly and put you in a predicament if he takes off on you unexpectedly. The safest way to carry the extra in your other hand is to make a series of loops and grab them in the middle, squeezing them together while holding them making it a simple case of opening your hand to let go immediately if you need to make a quick exit.
3. Clothing -- kudos for wearing boots. However, you may wish to wear long pants (jeans would work great and I know they'll probably be hot) for the time being. You want long pants to give protection to your legs if there's a bust up of some sort where he strikes or kicks out. You know, for that matter, it probably wouldn't hurt to wear long sleeves for the same reason. You can go back to more casual wear once you've become more solid in your relationship and know when it will be safe to take clothing chances.
Enjoy your time with him and best of luck. Let us know how you two are progressing.