Has anyone created a research tree map for Sins?

As a new player, I find myself struggling to understand the implications and requirements of the various choices - and then there are times, such as when I want to increase fleet capacity and am told it requires research into Telepathic Signalling, when that technology simply doesn't appear to exist in my research trees- either in those available or those I have to do further research to get.

Aside from tutorials, which are tedious when what you want is the answer to a specific question, there doesn't appear to be any in-game help. Or am I missing something?

Thanks.