Sketches work for me too. In fact I think that's what made the difference for me with Alibre vs. Fusion. Alibre you start with sketches whereas in Fusion they feel like an afterthought if that makes sense.
Actually I think that is quite incorrect. Sketches are the fundamental starting point in F360.
Sketches in F360 are simply tools which are used to describe shapes.
Those shapes, such as outlines, circles, etc. can be extruded to create a solid body.
A sketch can be created on ANY plane, and a shape can then be created to either extrude (add) or cut (subtract) from the body.
Similarly in F360 you could start with a simple solid body such as a box or cylinder. Now select a face and create a sketch on that face. The sketch describes a shape which can cut, intersect or join the body.
Bodies are 'dumb solids' which are simply 3D blobs to be reused as building blocks. When the bodies are geometrically correct they can be converted to 'Components'. Now components can be joined in the usual 9DOF arrangements. Joining components together builds assemblies which describe the entire model.
Then if you find that the original sketch needed an adjustment to a dimension, well - just change the sketch and the 3D body, together with everything derived from it (components, drawings, assemblies, manufacturing toolpaths, etc) will all reflect that change.
