You can think of energy fighters falling into two categories: there's the retainers, like the P-51D, Corsairs and so on. They don't build energy very well, so what you bring to the fight is essentially what you have. Their strength lies in energy retention (assuming good operation). Those types typically dictate a boom-and-zoom strategy.
Energy builders are things like the D9, G-14, K-4 etc. Here they do not necessarily retain very well, but might have a superior thrust-to-weight ratio allowing them to build an energy advantage relative to the other fellow even in a fight.
Ah! But what about the D9, it can climb / accelerate (same thing really) AND BnZ. Correct, you can see that we're really talking about attributes and not rigid airframes. Some aircraft types have measures of these attributes. Arguably a Spit 8 will turn-fight, BnZ and energy-build and all three of those things very well, so your stratergy can be very flexible.
IMHO BnZ is the easiest to learn, safest, most effective in the MA and will allow you to develop better gunnery than either turn / manouevring / stall-fighting or - what you could call +e-fighting. But you must be disciplined and allow your tactics to be dictated by the relative situation. I learned it when Skyyr arrived on the scene and I would say about two-weeks adaptation and I had the esentials down. It is also arguably a bit robotic and boring.
IMHO +e-figthing especially combined with unconventional manoeuvring is the noblest but hardest of the art forms. But work up to that.