Am a BIG fan of a "non traditional" approach to starting up - i.e., NOT a business 'plan'
A suggestion/recommendation which I now freely pay forward to anyone who is a sidepreneur, solopreneur, mobile-preneur, or any other class of (entre)preneur is to invest in these two resources: Blue Ocean Strategy & the Business Model Canvas. For the latter, there is an app in the Apple store to download as well.
