Yes, help is enough; it is much easier at random (buttons in most cases speak for themselves ;) ), and where I need to find something specific — Wellcome to help.
Another question — why to draw and even more to prototypicality in inDesign? This publishing system, books journals to impose, diplomas there any... the Most of his opportunities on the layout of the text on the web is simply unavailable (and even хтмл5 and цсс3 here will not be saved).
I prepare the layout in Illustrator, because every vector rounded rectangles-squares there is much easier to do than in photoshop, and each raster (icons, etc.) link to a file and edited outside already in the shop.
To prototypicality — again — easier to balsamiq (easier) or in ms expression blend (more features)...