Sorry, there is no one basic collection of tutorials I know of that is good for everything. This is simply because the way for doing some things may differ quite a bit depending on if it's nurbs/spline or box/mesh/subdiv style modeling.

For box modeling, look at tutorials for: Wings3d, silo, 3DS, hexagon. Also subdivisionmodeling.com covers the theory of the approach in general. (But sometimes I finding myself wishing they'd invest in a faster server.)

For nurbs, I'd suggest looking at tutorials for: Rhino, AutoCad, Hash, Maya, AnimationMaster... I'm not sure if there's a place that covers nurbs modeling method as a general topic, but odds are good there's one out there.

And some apps seem to crossover with modeling methods, but typically an app will handle one approach much better than another.

I almost forgot, nurbs and box/subdiv stilll don't cover everything out there. (Close, but not quite.)

You've got modelers that use a "sculpting simulation environment", these will use meta objects (shapes that'll stick together like fluid or clay) and deformer/sculpting tools. These programs try to approximate modeling with real-world materials. Z-brush is probably the best known one in this category.

And then there are programs that use boolean methods for modeling. Modeling purely in the Brcye rendering program follows this approach. But then you're only limited to developing forms based on the primitive shapes you start out with. Other programs may again combine this method with nurbs or box modeling.

Hmmm...  Maybe there should be a big list of tutorials sticky thread that breaks everything down by method, application, and skill level. I think it'd be a great resource, and it'd probably fill in some specifics for newbs that are likely to ask very generalized questions.

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Barbequed Pixels?

Your friendly neighborhood Wings3D nut.
Also feel free to browse my freebies at ShareCG.
There might be something worth downloading.