Okal Otieno and Roy Rutto from Ona were the featured presenters at the inaugural Nairobi Functional Programming meetup. The meetup was conceived by Okal and Roy to "discuss the core concepts of functional programming, why use it, and experiences using it." The iHub UX Lab graciously hosted.
Okal started off by explaining how functional thinking can help you write better software. Here is his list of further reading and slides: