how do I get help using my Mac?

First, I would suggest heeding the advice provided by BobTheFisherman regarding a more detailed question.

Since you say you can't use your new MacBook Air, I am assuming you're switching from Windows to Mac? If that's the case, this may help: Tips for Windows switchers - Apple Support

If it's just the overall operation of your MacBook Air, then I'd recommend reviewing this User Guide: Welcome to MacBook Air Essentials - Apple Support

If it's something else, then please refer to my first statement.

Maciscomplicated wrote:

upgraded to MacBook Air,cant use it.frustrated,,,getting ready to trash it!

Why can't you use it? What happens when you try to use it? Please provide some context and details so that we can better help you.

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