I have just noticed after over 5 years working with Revit that if you press the 'ALT' key on your keyboard, you will see a new list of 'key tips' above certain tools in your Revit ribbon as seen below. The list will change depending on what tab you're in - meaning there is a shortcut for almost every tool! Not sure how that one has slipped past me for so long!

Paul Aubin has recently released a video showing his progress with his Corinthian columns that he is trying to model as a fully parametric Revit family. The video to the right shows the process of him modeling the decorative leaves on the column, and the methods he has used modeling to achieve such an abstract form.