As stated before:
You are on the tail of the needle (pointy bit points at the NDB, most of the time).
The tail always rises (when you are in a straight line)
Look at where you want to be. If it is right of where you are (the tail) turn right. If it is left, turn left. Works whether you are outbound or inbound.
To intercept a track, both "where you want to be" and the tail of the needle must be on the same side of the fore-aft line, with the tail below where you want to be. (If the needles are split either side, you will never get there.) Maintain a straight line, and the tail will rise to intercept.
Remember to allow for drift when tracking.
If you pass a station (not overhead) and take up a heading of, say, 090, you will never get onto the 090 track from the station in nil wind. The tail will get closer and closer to 090, but never make it, UNLESS you get blown onto the track or you change heading towards the track.