Howdee Aaron I spend a few years over north of Hobbs in the SE corner in a small place called Tatum. As you are already learning for every question you'll get a multitude of answers or suggestions. Everyone wants to help and everyone has their way which we all think is best. Once you get up on your feet, you'll see that some folks will more favor the style of cooking you'll want to use, simply because you'll have the same ideas and/or cookers.
My first suggestion, read the instruction book that came with the unit after every smoke again. Small details cause Large problems. LOL.. I just went and looked at it.
Since you said electric and I don't have a pellet cooker but I do have electrics, my very first suggestion is quit opening the door. Its not your Daddy's old charcoal grill. Leave the door closed, don't spritz, mop or sauce. You simply don't need it.
To start, forget the brine, the injections, the marinades and rubs. Take a whole chicken, with paper towels dry it. Thats it, once its really dry, rub the skin with oil. This prevents breaking and cracking which lets the moisture out of the bird. Thats it! Put in on the smoker, close the lid, and walk away.
Your learning time will shorten and you'll enjoy the learning curve more with an remote thermometer. You can at least safely eat something that will taste good when you mess up. Its gonna happen! Its a small learning curve also.
Do not expect your your smoker to maintain perfect exact temperature 100% of the time. I know I couldn't afford to buy a professional uniit that does that, learn to roll with the flow. Cavemen could do this over burning sticks, it can't be an exact science.
Put in some time , I'd use chickens, fast cooking, easy to get, and fairly cheap (when compared to other meats). do two or three, keeping notes at first to learn from. A well smoked chicken is better than a badly smoked prime rib roast anyday.
Thats it, no sense loading you up with suggestions yet. Kinda like golf, you must develop a consistent swing before anyone can help you improve it. Forget all that flavor enhancer BS, thats what you do after you can smoke the chicken. Prove the basics than go after the modifiers.
Remember its supposed to be fun and enjoy it. The good smoke will come, you just have to get your feet wet.