I think it's worth familiarising yourself with as many TnRs as possible as this would cover a lot of working that has been used again and again with TnRs. Most principles are quite similar but getting a wide range of sources should assist you in correctly tweaking each version to your heart's content.
It also depends on where you plan to perform, number of people, angles, reset, visual...there are four by four restorations that are still visual but happen much quicker. It really is up to you.