With design as a part of UX I'd expect a bit more from cover and microsite.<p>Cover could be UX related (or are you really well known in the scene?). And the microsite would do good with a hero image and centered, bright call to action buttons.<p>Oh and ebook or not: physical books have charm, snap a picture with good lighting and no other clutter around it and throw it in there too.
Feedback on the landing page:<p>Could use better sales copy. Doesn't actually say what you're going to teach me, or have tangible examples. Grayscale image of your face is not particularly interesting to me.