Welcome - you've found a great resource here and lots of very kind and knowledgeable people who will walk with you on this journey!
As far as a food - I would suggest printing out Binky's list and going to a pet store (PetSmart, PetCo or a place like that) and reading the labels of the kinds you chose from the list. Sorry I can't be of more help. But, while you're there you can pick up some freeze-dried treats, too!
I hear you - I never thought I would be able to test or give Hershey shots. At first, my husband did that and I sat quietly (often holding my breath with my eyes closed) and I handled the paperwork - joining the forum, keeping the SS (spread sheet) updated, etc. Then, one night, I was home alone with Hershey and he just wasn't acting right. I felt so helpless not knowing if his numbers were low because I didn't know how to test. I decided I wouldn't be left feeling that helpless again. As soon as my husband got home, I got him to teach me how to test. I have found routine works best with him, just like it did with my kids. We always test sitting in the same rocker/recliner next to the lamp. I kind of cross my leg (man-style, if you will) to help him remember not to get down. And, now I test about half the time and can usually get enough blood first poke. Their ears really do 'learn' to bleed!
We give his shots while he's eating. We rub the area, tent, shoot and rub it, again. He's usually oblivious to us even being in the room!
Now, testing for ketones was a little more difficult since he's a pretty private kitty. But, ever since that first time, it doesn't bother him anymore.
All of that to say - it DOES get easier and you CAN do WHATEVER it takes to take care of your baby.
I would advise you to spend as much time as you can reading through the information and threads here and even looking at people's SS (spread sheets) to kind of get a feel for how different people do things. And, ask lots of questions!!!
Again, WELCOME!!
Libby (and Hershey, too!)