Mikael Olsson is a professional web entrepreneur, programmer, and author. He works for an R&D company in Finland, where he specializes in software development. In his spare time he writes books and creates websites that summarize various fields of interest. The books he writes are focused on teaching their subjects in the most efficient way possible, by explaining only what is relevant and practical without any unnecessary repetition or theory. The portal to his online businesses and other websites is siforia.com.