First we need to open the ethereum wallet
we can do that on
https://www.myetherwallet.com/
once we create a wallet we need to download and install drivers of our gpu in my case is nvidia
http://www.nvidia.com/Download/driverResults.aspx/106780/en-us
once the drivers are download we install them by typing
chmod 0777 NVIDIA-Linux-x86_64-367.44.run
./NVIDIA-Linux-x86_64-367.44.run
now we need to install ethminer by typing
sudo apt-get install software-properties-common
sudo add-apt-repository ppa:ethereum/ethereum
sudo sed 's/jessie/vivid/' -i /etc/apt/sources.list.d/ethereum-ethereum-*.list
sudo apt-get update
sudo apt-get install ethereum ethminer
now we need to create a small bash file to start mining by typing
nano mining.sh
ethminer -G -F http://ethereumpool.co/?miner=74@0yourwallet@yourmingmachin 2> /var/log/mining.log &
we need to make file executable by typing
chmod 0777 mining.sh
now lets start mining by typing
./mining.sh
and we done happy mining !