None. General Contractor implies self employed. A relevant degree would be a bachelors in Construction Management.
In most states contractors are licensed by the state government. Each state sets its own requirements. Your best option is to contact the relevant state licensing board in your location and find out what education/training is required.
Be able to work a hammer, nailgun, pencil, and be careful, those pencils can get pretty sharp.
PATIENCE
The qualifications you need to be a building contractor are
You do not need a contractor license but you may need a permit depending on what your converting it into.
You do not need a contractor to install shelves, as it has nothing to do with structure. You are free to do any work that does not involve structures without a licensed contractor.
We would need to know the kind of contractor in order to answer your question.
yes, unfotunatly i found out the hard way
You'll need a contractor's license issued by your state. To see how to get this, visit http://www.contractors-license.org/
Normally a general contractor just needs a state license. Depending on what he does he may need additional licenses.
Ask the Contractor an if they don't know it is time to find a competent contractor.
You need to contact your local better business bureau and inform them of such contractor.
You don't necessarily need a contractor to find out what is wrong with it. Look for a Air and Heating company in your area to come check it out. A contractor would be more expensive.
Yes
Need to get referrals.