No, pedals are not necessary, especially for the genre of blues you favor at the onset of your journey.
Here, you'll get maybe 20 different recommendations for a distortion or overdrive pedal alone. Everyone has their favorite.
I can't recall BB using distortion or overdrive. Just awesome finger vibrato on a clean semi-hollow.
As for the tube amp suggestions, which have nothing to do with your topic of pedals, for a beginner like you, IMHO, a tube amp is a loud, limited, expensive and high maintenance pain in the a**. An unecessary tool.
A decent solid state amp can pack a lot more sonic and tonic sampling bang for the buck.
Solid state amps offer you loads of options at a relatively low cost, with built-in reverb (a minimum necessity, IMO) and a headphone jack for private quiet, uninhibited practice.
Tube amps are great. Once you know what you want and understand how to maintain them. If you don't, they're a money pit.
Until then, plug n' play is more practical.
KISS. And play.
GAS will come later.