I'll show you how to model a water glass in Solidworks.
A while back another engineer asked me how the model was done and I made a short description of the steps of building the model.
Today I've improved the tutorial and added images of the process.
I hope you'll find it useful.
PS you can download the completed model from here - Water glass.
If you have any questions, please feel free to ask.
Answered with a tutorial: https://grabcad.com/tutorials/tutorial-how-to-model-a-water-glass-in-solidworks