If you are looking for easy solutions to create smooth and precise models, the Expert Curve Modeling Blender add-on presented by Vovrzull might be what you need. Its various useful tools aim to help users create complex and flexible models based on Bézier curves and, best of all, save you time and energy from a large amount of manual work for mesh topology.
The developers have prepared a series of instructional videos to help users understand the add-on and learn how to use it. The nearly one-hour instructional video below provides a detailed explanation of the basic principles of working with its functions and modes (Vertex, Curve, Segment, Model).