At a high level the steps are:
# Download the wallet from [https://github.com/RavenProject/Ravencoin/releases Ravencoin github], install and get a receiving address, be sure to backup wallet.
# Select a pool from the [[Pools]] list - or find one on the [https://bitcointalk.org/index.php?topic=2752467.0 BitCoinTalk ANN]
# Download the GPU miner from GitHub links below.