Congrats on your V-2!
May I suggest just viewing the V-3 like any other rating. Sure, there are a few more bells and whistles. Just get a solid procedure on how to track radials and you'll do just fine. Just keep your focus on what the rating's transcripts, videos, etc. have to say and you'll do fine. I don;t know if anyone has mentioned it, but having a good VOR "how am I going to do this" type method will help. Here is the way I do it, but your mileage may vary...
- Assuming the aircraft is tracking "TO" the VOR, I set the HDG to the new radial I will be tracking "FROM" the VOR.
- At less than 1/2 mile TO the VOR I engage the preset HDG. Depending on the winds, I end up roughly "inside" of the turn.
- Once I get past the VOR about a mile, I re-engage NAV. If the NAV doesn't lock-on, I adjust (slightly) the HDG to intercept the desired outbound radial and go on my way.
Like I said, this is the way I do it. If you have your own way to do it and it works for you, you're almost home. Now, if you can read and understand the descriptions of the Coastal Route, the Mini Route, etc. you should have no trouble getting your V-3 in short order. Be sure and ask any questions. Good luck!