I found it intuitive and useful from the first click, but then I worked 45 years as an electrical engineer...? I think you need a bit more background first.? I'd suggest you Google "Vacuum tube amplifier power supply design", read a few of the articles.? If none of them make any sense, you might try the Navy training course on vacuum tubes and power supplies - search "NEETS module 6" and it'll pop up.? If you've never used the power tools in a metal shop, don't start without some training - you can make a mess out of a job easily, even if you manage to keep both eyes and all of your fingers.? Some tools are like that.
