The Beginner's guide to Twinsets

I am about to embark on the new adventure of twinset diving. I have
discovered that, associated with an increased degree of complexity
comes an incresed degree of very wide ranging opinion. For example:
Bungey wing or non bungey wing;
Barrel fit manifold or O-ring assembly manifold
Harness with / without release clips
"Doing it Right", or not "Doing it Right"

For fear of not "Doing it Right",(and incurring the scorn of the divers
who do "Do it Right") or incurring the scorn and wrath of other divers
who may have the opinion that a certain piece of kit is either
unnecessary, or absolute requirement, I would welcome some advice.