I'm pretty confident in my ability to take disc rotors off and on again, and to replace the pads, but any sort of calibration or adjustment is a bit of a mystery to me, if that gives you a sense of where I am. :-)
(I knew how to adjust rim brakes just fine. I have to relearn everything know that I have discs.)
@Criggie No, there aren't any for 203mm. First one I found on Amazon, some kid's tire. Actually I haven't had problems with marathons on 622mm and 406mm in a long time and I almost exlusively use Schwalbe Marathon tires. Mounting that 203mm tire was like an order of magnitude more difficult.
I would like to bicycle commute to work, but we don't have showers or any place I can change. How can I clean up and carry clothing? My office is business casual, but I need to look neat and presentable.