Hi @offbeatbroad! I have an a grain mill attachment that goes on my kitchen aid. You can use a food processor though as long as it is a good quality one. I got the Wheat Berries on Amazon. Below is the link with the one I use in particular.
https://www.amazon.com/Non-GMO-Project-Verified-Non-Irradiated-Certified/dp/B001PEZLCM/ref=sr_1_6_a_it?ie=UTF8&qid=1515896058&sr=8-6&keywords=wheat+berries+organic
the fresh ground wheat flour has such an amazing flavor! I would strongly suggest you try it.
Thank you and happy bread making.