Been always a fan of Spidy, but never fully read the comics, specially the OG comics from the 60s until a while ago. I'm loving the stories and even the b-lister villains. (Except the enforcers. So lame...)
I'm loving the attention to detail, but... Something has come up that left me wondering.
Spidy is supposed to be weak, frail and dorky before the bite. I'm guessing then that he had no knowledge of martial arts before the bite.
After the bite we accompany Peter's adventures even on his sick days, and he hasn't been taking classes or talked about it... And yet, since Romita chimed in I've seen him perform Karate moves and talk about it and now in issue #49 he uses Judo and tells Kraven that he may disable a gorilla with his grapple, but neither the gorilla or Kraven know judo, and then Spidy proceeds to free himself.

What appears to be a plot hole is ever addressed?