Yes even the likes of me at first i was confused with the technicalities on how bitcoin works and why do investors earn in bitcoin. And so does curiosity with the system i came to have a lot of research and then i get the concept of bitcoin and that was fun learning about the system. Imagine someone has created a good form of investment and not only that the owner is so techie when it comes to new technology and the use of it. No wonder why bitcoin nowadays became a hit wonder around the world. And if you are asking about its complexity yes there is a complex in the system especially if you are not that familiar with the use of computer. Well i guess investing in bitcoin are those only for computer literate and not for those who are not familiar with computers and internet.