Mayday! I need support!

A little bit about my history, I have never in my life been able to run, due to sinus tachycardia with my heart. Almost two years ago I did a total elimination diet, due to my daughter's (who is breastfed) food intolerance. Not only was my daughter healed of her various horrible symptoms, so was I! I no longer have issues with my heart and my resting rate is around 70 bpm vs. the previous norm of 90-120 (even was caught at 180 resting rate on the monitor I was on for a month many years ago).

Anyhow, I am completely not familiar with running other then I LOVE it now that I CAN RUN!  I feel so blessed now and have planned to do something about my new passion. I have signed up for a 10K in a month and a half marathon in Oct, both of which are trail runs. I had been running on trails lately but just started an actual schedule last week.
Now that I'm doing more than a couple miles at a time, I have accumulated some questions, and please bare with me, some are probably very obvious:


When you are racing, do you stop to use the rest room? Do most runs have 'pit stop' areas for this?


Would I look like an idiot if I had a camel pack on my back? Is this typical for runners to use? (I backcountry hiked before my new running passion)


Where do you keep your water? (I only seem to want water about every one or two miles.)


In your opinion, what is 'must have gear' for a new runner?


Are foam rollers beneficial? Do you take them to the park with you for your run?


Do  you recommend I get a GPS watch or a smart phone to track my runs (I would like elevation info and info I could save on the computer) ?


What apps on phones do you recommend?


Anyone eat the Paleo diet that run? I would love any info or support I can get in that department!  or people who are dairy/gluten/soy free would suffice as well.  I would eat quinoa/sorghum/rice if need be to carb up  for my runs.

I have looked up common mistakes of beginning runners, and I found that I need to make some adjustments such as not over striding, and not toe running, not being too upright with my back (bend slightly forward at the ankle), also set goals to learn and do some stretching/massaging/strengthining training before/after runs.

Thanks in advance!