Earlier this week, entrepreneurial author James Kaelan explained how he built a sponsored book tour using a pitch deck–a slideshow presentation that helped procure sponsorship for his book tour.

Most writers are completely unfamiliar with the process of creating a pitch deck. Venture capital firm managing director Guy Kawasaki (pictured) created a concise and practical guide for venture capital seekers and writers to follow when creating a presentation. He wrote it in 2005, but the advice still works beautifully after five years.

Here’s an excerpt, but read the whole essay: “I am evangelizing the 10/20/30 Rule of PowerPoint. It’s quite simple: a PowerPoint presentation should have ten slides, last no more than twenty minutes, and contain no font smaller than thirty points. While I’m in the venture capital business, this rule is applicable for any presentation to reach agreement: for example, raising capital, making a sale, forming a partnership, etc.”