School yourself on the history, study the terminology and shop every fit from the most storied brand in blue jeans.

Levi's: the OG purveyor of denim jeans ... Though a single digit higher than the ‘501’, the ‘502 Tapered’ didn't arrive until eighty years after their predecessors, in 1967.

My coworker wears J.Crew Giant Fit Chinos. They look sick. I have a pair of vintage Levi's 501's I bought off eBay ... But I'm here to be your guide and show you through the entire Levi's jeans ...

The 505 is the first zip-fly jean by Levi’s, created in 1967. With a similar cut to the 501, they sit at the waist, offer a bit more room in the thigh and have a straight fit down to the leg ...