Magic8Ball

Hi all, I was wondering if anyone knows of a mod that allows for a custom science tree? I'm asking because it feels like having access to jet engines, wings and general "air plane" type parts would be more logical at the start. This question might have been asked before, I have a feeling I asked it somewhere before but I never got an answer so any help would be appreciated. Thanks Peace.

Apart from the wiki, has anyone got a guide of the basics of construction for this mod? I'm having a hard time fumbling around trying to work out what power source / fuel source each engine requires. thanks peace.