New member with a new (to me) machine

[fsyemogushi]

Finally got it all cleaned up but unfortunately I never let it run very long and I come to find out while the compressor and fans all sound like they work, it never gets cold.  I'm pretty out of my depth with the refrigeration unit and I'm not sure where to even start.  The bottom part seems to get really warm and I assume it is the compressor part.  Any advice where to start trouble shooting?  Could it just be out of freon?  Can I get more?  Thanks for any responses.