Make a 3D model out of a jpg.

Hi community!

I'd like to make a 3D-plan and get it printed later on. But first of all I need to model (a lot i think).

I've attached the plan for my project. Hopefully somebody can help me how to model the whole thing & which tools to use.

I've only used Sketchup before. Therefore I'm totally new to AutoCAD.

Thank you very much.

Yours, 

Markus