You are ahead of me. I have never grown them before. Here’s a link to get started. Seems pretty straight forward.
http://stephaniesuesansmith.com/growing-sweet-potatoes/
I know this about sweet potatoes: they furnish more nutrition of the right kind than any other food. I researched that years ago when I was searching for the best canned foods to store based on nutrition. Even the canned ones are loaded with what one needs.
When I buy fresh ones, I bake them like regular potatoes - don't boil them and mash them, don't want to interfere with the nutrition they have inside. If you look at a can you will see what the canned ones provide. They are much better nutrition than a regular potato. That is because they are orange. Normally, darker colored foods have more nutrition than light colored foods. This goes for fruit, too - the darker the better. “Black”berries have more antioxidant than lighter colored fruit. Cherries also have more antioxidant than lighter colored fruits. I knew all this before I started trying to grow food plants. This is why I got the blackberries than another berry.
It has been years since I have grown sweet potatoes - but to the best of my recollection:
you can get several slips from one plant (slip is leaf and stem)
we used to “bed” a few sweet potatoes to make a lot of slips, however using a plant that you rooted in water should work
you just need one leaf sticking out of the ground and rapidly the plants will grow, filling in the area
you cannot really plow sweet potatoes because they grow very very horizontal (even moreso than peanuts) - whole other animal than irish potato -
generally the sweet potato tubers do not make deep in the ground but are rather shallow
I have never container grown sweet potatoes, my only experience is field grown