I am trying openvpn on rb2011uias-2hnd-in but no success

help! I just want to setup a simple openvpn server on this thing ,still no success after 3 days working on it. I have try wiki it, but no help
Please some teach me how to step by step to setup. :confused: :confused: :confused:

A step for step user manual is welcome

start by telling us what is not working