“…vision is not a solution or a specification of how to work, but rather an organizing principle or a preliminary idea that can help the designer structure his or her work and response to the situation as it unfolds over time.” - Löwgren and Stolterman via Design Anthropology: Theory and Practice by Wendy Gunn
Quickly jot down what assumptions you have, then group them up into themes—affinity diagraming. Afterwards discuss what you want to research and learn. After that exercise, input post-its into an spreadsheet. Content from each post-it can be tagged with a theme, who is this for, and currently available evidence.
“If I had an hour to solve a problem and my life depended on the solution, I would spend the first 55 minutes determining the proper question to ask, for once I know the proper question, I could solve the problem in less than five minutes.” - Albert Einstein
I finally got around to uploading a presentation I gave in 2011 on the basics typography and typesetting on the web. Luckily basic typography principles don’t change much. Although, the CSS section could be updated with another few slides added to it. Browsers supports a lot more typography related CSS now.
Innovation and iteration share some of the same tactics, iteration is generally less divergent and more time sensitive, so it's good to base your decisions on solid data, then look to your users for areas of insight and to gain empathy for their needs. Evaluate your current products, systems and service then start designing experiments you can release and test. Simple lean, data and user driven design.