This really helped me with orbital rendezvous. Another tip I could offer is to keep your eye on the prograde marker rather than the direction the ships nose is pointing, as your making your final approach it's really important to keep that node over the target node. Also, Clicking on your navball where it says "Orbit 200 m/s" will change it to Target mode and display your relative speed to the target, which is very helpful. Just follow the steps exactly and you'll be doing it with your eyes closed before you know it. P.S. Full credit and tonnes of props to whomever made this excellent aid, it certainly wasn't me, I just found it via google. Thanks mysterious stranger!