Here are a few basic video tutorials that give some tips on how to use an arcade stick. This includes info on how to grip a joystick, differences between a pad and a stick, button "drumming", and more.
Heres a pretty decent guide on learning the basics of using a fightstick(~9 minutes):
"Fight Stick Basics 101" video by youtube username: "jumblejunkie"
Another tutorial on fightstick basics(~8 minutes):
"Learning to use an arcade stick 101" videos by youtube username: "duffath"
A guide on various holding positions for a balltop joystick(~6 minutes):
"Ultimate Japanese Balltop Joystick Holding Guide" video by youtube username: "CantoV"
A comparison and opinions on using fightstick vs pad(~9 minutes):
"Pad VS Stick for Fighting Games" video by youtube username: "Avoiding The Puddle"
A humorous tongue-in-cheek introduction to the fighting game community(~8 minutes):
"Fighterpedia 10 - The Arcade Stick: A Gentleman's Guide" video by youtube username: "Machinima"