: Moderate. The UI is straightforward, but mastering accurate 3D geometry takes practice.
The text bar at the top. You can type commands directly here. Essential Setup: Snaps and Gumball
Advanced Rhino modeling moves away from standard geometric primitives and enters the realm of high-end surface continuity and parametric design. Surface Continuity (G0, G1, G2)
Save these as defaults.txt or in Options > Aliases :