Working through the process of hand milling all your boards for a project can be an enlightening experience, especially when the lumber is cupped and twisted to any significant degree. Fortunately there’s a lot of good information out there to help with this. One video in particular with Andrew Hunter, does a great job of condensing that process in about 8 minutes. You can see it here.
I’ve watched it a number of times as I’ve worked my way through the process and as long as your tools are sharp, I think you’ll really enjoy this approach as a nice complement or depending on your preferences, a complete replacement for power tools.