[wizwazzle]

Entrepreneurship can be boiled down to one command (don't crucify me): Find a need, or make one, and fill it.

So start by learning the problems that people have and truly validate that problem's existence and significance in their lives.

The second thing I would consider are your execution abilities. Looking at your websites, it's clear that web design isn't your strong suit; it seems your strong suit might be having deep knowledge of the linux ecosystem (taking a guess here). Then again consider your market size.