Reference
Phonetics and pronunciation reference
Reference material you can come back to. If you teach pronunciation, this is the vocabulary you need in order to describe what a student is doing wrong.
How to read the IPA
You do not need the whole chart. You need the twenty symbols that differ from your expectations, plus the logic behind the layout — after which the rest is lookup.
The hardest sounds for English speakers
Ranked by actual difficulty rather than by how exotic they look — with the reason each one is hard and the specific fix. The near-misses cause more trouble than the strange sounds.
IPA vs phonetic respelling
"pruh-NUN-see-AY-shun" is easier to read and tells you less. Where respelling is the right choice, where it actively misleads, and why it cannot work at all across languages.
Phonemes vs allophones
Why English speakers cannot hear the difference between two Korean stops, and why Korean speakers cannot hear English b and v. The distinction is the single most useful idea in learner phonetics.
Stress and rhythm explained
Rhythm is the deepest difference between languages and the least taught. Why English compresses and French does not, what that does to learners in both directions, and how to fix it.