I second King Arthur's website. Look for the recipe for Big Beautiful Buns. They are amazing and I used to make them instead of buying hamburger or hot dog buns. I followed their instructions on making sour dough starter and have kept it going for over 2 years now. I use the "discard" of the weekly/bi weekly feeding of the starter to make buns now. The best thing I ever learned about making bread is to weigh your flour. also weigh the dough as you shape it into buns. I weigh flour for any recipe I use. That one thing has made a world of difference in my baking.
Happy Baking,
Murphy