hi guys I have this piece right here that I want to learn how to model in solid works just the top section. I was thinking of extruding the top section and drafting the extruded cylinder then doing some type of swept cut but I dont know how to approach it and quite stuck. Here is the picture of the model and here is a screen shot of my solidworks model part.

Also my second question was in figuring out how to use "hold wizard" and extrude a thread. I wanted the bottom portion to be threaded but for some reason it gives me an error and says I can only cut into the threads not extrude them ?

I am not sure what I am doing wrong to NOT have the threads extruded ? I just made the diameter longer so it matches the outside of the threads but for further use it would help to understand why I cannot extrude?