I Helped get so many people up and running today!!!!!! So cool.
Starting height, Nozzle just touching the bed, all axis should read 0,0,0. When its starts the print it should lift the right height of the first layer. Do it once or twice and it is simple, you are aiming for slightly squished extrusions and still able to distinctly see each line. Just before the point where they smear together. Wipe the blue tape with 70% alcohol or better (I think the 90% might stick better). If you get tape stuck to your prints just soak that surface in alcohol for 5-10 minutes and it scrapes right off.