This learning curve has absolutely been a challenge for me, I can't tell you how many times I have hit a wall trying to build one of these. Having no electronics background what so ever, I have to question every connection and understand why it goes there. Then add the fact that your flipping it over and looking at it in reverse doesn't help. It was something I just couldn't accomplish after a hard days work, my mind would simply lock up second guessing myself. Well, being a patient student, I kept going back to it, trying to learn and absorb something every time. I understand it's a simple circuit, but working from schematics confuse me after spending most of my adult life working with blueprints. I also don't like making any solder connections without being 100% sure it's correct, so there has been many stops and starts. I pretty confident I got everything correct, looks like we will find out soon. Next challenge is to verify where all the wires get connected, I'll be pretty excited when I can relax and say I did it.