Business Plan Mind Map - that's exactly the level you should look at this topic in an early stage startup environment. Use it as a brain teaser, be very selective (e.g. don't worry about balance sheets etc.) and don't overstrategize. Stay humble and lean and capture your initial data in the lean or business model canvas - not in a heavy business plan document.
How to Mind Map created by Jane Genovese. The How to Mind Map Mind Map will help you to learn the principles of mindmapping. The Mind Map breaks down the creation of effective and exciting visual notes to help recall and retention, the essential components and equipment needed and use of colour and images. In addition the mind map covers the how and why of mindmapping plus comparisons between paper and computer based mind maps.
Open Mind Mind Map created by Paul Foreman. The Open Mind Mind Map will help you to appreciate that often limits are mind made. The Mind Map breaks down transcending barriers and the known, embracing uncertainty via exploration, imagination and creativity and developing a questioning mindset. In addition the mind map looks at focus of thoughts and beliefs, plus blocks real or imagined.