Here's step-by-step instructions for linux - working on ubuntu, haven't tried on others.
Switch to root user
1: Run updates and install dependencies
sudo apt-get update
sudo apt-get install build-essential git cmake libboost-all-dev
2: Git clone
git clone https://github.com/ZirtysPerzys/dragonglass.git
3: Build the files
cd dragonglass
make
4: Sync blocks
cd build/release/src/
./dragonglassd
(keep this one running and open new terminal for next step)
5: Create wallet
~dragonglass/build/release/src$ ./simplewallet
set up wallet name & password
then start mining in wallet
start_mining

use "help" in wallet to check other commands