How does spinning provide mechanical energy?

Wind turbines for example. I understand it needs a generator, but I don’t understand how it generates power into it.
I was also wondering if it worked both ways. Like if a wind turbine provided energy by spinning clockwise, could/would it (hypothetically) power the generator by spinning counterclockwise?

Horizontal WInd Turbines building Instructions?

Does anyone know a website or link that can give direct insturctions to building a Horizontal Wind Turbine? Not one of those ones the size of football fields. More like a small model. Yahoo! Answers is my last resort, and I need to type my procedure in for my 9th grade Science Long-Term project by tomorrow!!

Please! I really need help! My partners on the project basically suck…and don’t know anything.

How can I use a windmill to help supplement my electric bill?

I looked into solar panels, but apparently it isn’t worth the money to buy one. Someone suggested a windmill. I have a large three bedroom home and the heating and cooling bill is killing me. Would a windmill work?

Senior citizens would you have a generator if you lived in an area that had debilitating weather?

I don’t understand why some of these people do not have generators where the weather can get wild. Either too hot or too cold.
My son lives in his own home in SC and he got a huge generator when he moved in in case of outages. He also got it large enough to run his home and the people next door as they were having stair- step children and needed to have lots of milk around he thought.
Patti: it depends on the size of the generator and the appliance.