A great starter 3D application, but with enough power to cope as your skills develop
TurboCAD is a piece of software that attempts to straddle the great divide between your current design skills and the skills of a design professional. Armed with TurboCAD, you can design practically anything in a 2D plane. Models for products, or hobbies, or even master plans for building work. TurboCAD doesn't give you the structural engineering skills to make your sketches workable, but enables you to express your ideas in industry-standard terms.