...and remember the Search box at the top right is your best friend to find the heaps of treasures hidden here 😉

@gmyhilo said:

Can you use SketchUp for mechanical work?

Yes, as far as modeling goes. You need SketchUp Pro for presentation (production) drawings.

@unknownuser said:

I am in a aircraft club and wish to have a CAD program our club can use and share ideas with.

Can we save drawings in a comnon place like our web site?

This is a function of your OS and networking setup.

@unknownuser said:

Is Sketch up suited to collaboration by members of varying levels of CAD skill?

Sketchup is not a true multi-user platform. It can be used by those with varying levels of CAD skills.

@unknownuser said:

Will it cost much? Our club runs on dues, so we have very limited financial resources.

Sketchup Free is free.

@unknownuser said:

Please suggest Sketch up features, or tutorials related to each of the above question?

Youtube is a excellent source of tutorials. The problem isn't getting help, it is in understanding, and using it.

There is no single CAD application that can do everything WELL. There are many other considerations then posted above for building a comprehensive, multi-user Cad system. There are few CAD programs can provide all functions in one application. If your budget is restrictive, IMO Sketchup is a good place to start.