From a practical standpoint, I just plain saw my logs, to 4/4 and 8/4 boards, stack and sticker them outside, then pick out what is good for bows, leaving the rest for other uses. I don't edge then unless I have a special need.
For 8/4 through the center area of the log, if you leave the waney edge on, you can strip those off with a band saw about 2" thick when dry and that is a true stave for a self bow. If you're lucky you get two of those per board, plus the center can still be used.
However on some species (black birch for exmple) the center board should be split in half before drying -- or it will split itself. Tensions are too high. It doesn't hurt the bows, but it wrecks the center for other uses.
The top and bottom wane boards on a log can also be cut thick and yield staves if you then edge them. All of these above are true staves for selfboaws, not board bows.
The 4/4 boards will yield board bows. Just pick the best of those in your stacks, either quarter or flat or whatever ring pattern is your preference. Likely to be better than store-bought if air dried, hand selected and cut to follow the log contour.
For plain sawing with the mill for best bow usage, you want to wedge up your log so the cuts are parallel to the top edge of the log. Then flip it, and re-wedge it so the new top surface is parallel with the track. You'll end up with a double tapered center piece usually, but your other boards will follow the rings better. Then wedge up your center piece so its centerline is parallel to the track. First board will be a wedge trim, but the rest except for the bottom will also be parallel to the grain.
Other things like sweeps, and leaners will add some complexity in terms of how to cut for bow usage, but you'll get it all eventually.
Hope that helps.