These are instructions that will help you to install ERPNext on your Unix like system (Linux / Ubuntu / MacOS) using the Terminal. If you are looking at easier ways to evaluate ERPNext, see this page.
Install ERPNext in one command!
sudo su
wget https://raw.github.com/webnotes/erpnext/master/install_erpnext.py
python install_erpnext.py
If you are installing on your server for deployment, remember to change Administrator's password!
If you get stuck, post your questions at ERPNext Developer Forum