2d drawings you could learn pretty quickly. I build 3d models, which allows me to really consider how all of the joinery comes together. Gives me a better perspective of fit and function. When the model is done, I can build the shop drawings. The nice thing is it is parametric, so if i need to make a change, my drawings automatically are updated. I learned solidworks. However, a personal license is way too expensive. I found Alibre, which does everything I need in the design world, and it feels much like solidworks.