Q.peach trees
I sprouted a peach tree from a seed. It’s about 8″ tall. What do I do next, just let it grow or prune or what? What do I do for the next couple of years so it will survive?
If it's in a container, I would leave it there for at least another season before planting out, just to make sure it's healthy and strong. If you planted the seed directly outside in its permanent location, that's fine. Just ensure that it receives protection from scorching afternoon sun (shade cloth works well) and cold winter temps (mulch should do). Do not prune the tree for at least the first couple of years. It needs to focus its energy on growth and anything under 2-3 ft. tall is really too small to be pruning anyway.
This article will help you with caring for your new peach tree: https://www.gardeningknowhow.com/edible/fruits/peach/peach-tree-care.htm