Make sure you're downloading software from trusted sources. There have been reports of some miners possibly including malware, whilst this isn't confirmed it's down to you to exercise caution installing anything on your machines. The GitHub links in the steps above to RavenCoin, MSFTserver and the AMD miners have been used by lots in the community and are generally trusted.
There's some great guides on [https://ravenforum.org RavenCoin Forum]:
[https://ravenforum.org/topic/15/mine-raven-with-awesome-miner https://ravenforum.org/topic/15/mine-raven-with-awesome-miner]
[https://ravenforum.org/topic/17/sgminer-a-troubleshooting-guide https://ravenforum.org/topic/17/sgminer-a-troubleshooting-guide]