Someone School me on the AK

I just bought an AK from my buddy who was in a bind. I know nothing about AK’s. The left side of the receiver says “75 Sporter 7.62X39 Made in Romania/Armexim TGI Knox TN”. Is this thing decent or should I sell it and get something better? Any help would be appreciated.
Thanks,
Simon

Sounds like it’s a 7.62 Romanian WUM-1 or Romak I, imported by Tennessee Guns.

Pics would help.

Could be a very decent little blaster.