2004 Honda Civic Ex A/C Troubleshooting?

I'm trying to fix my car s a.c. System. When i turn on a.c. Clutch and turn it on the car blows warm air. When i check the a.c. Compressor it is not running and the a.c. Fan is not running also. Where do I start to troubleshoot it. I'm thinking is there power in the system or is it just low Freon?

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