We've found that our Danish students can have trouble imitating the glottal stop used in that language.
Taj Archive: Glottal Stop
Pronouncing the Glottal Stop in English
Nuu Chah Nulth Texts – The Toquaht Language Project
Is there an important purpose, letter Q serves in English? What
Who Misses Skeuomorphism?
Uh-Oh The Glottal Stop
Why have we got it in for the glottal stop?, David Shariatmadari
It's Never Too Early to Get Started.
10 of the Weirdest International Slang Phrases
Lushootseed Dictionary : Bates, Dawn : Free Download, Borrow, and Streaming : Internet Archive
The video appears to illustrate several phonetic concepts. I believe E