Press your lips together, add vocal cord vibration, then release.

Americans pronounce between as buh-TWEEN (/bəˈtwin/). Stress falls on the second syllable — keep everything else short and quick. You'll hear it in sentences like "She pressed the flower between the pages of a book" or "The chemistry between the two lead actors was palpable" — more examples below.
Record yourself saying "between" and play it back. The mic stays on your device — nothing's uploaded.
2 syllables, 6 sounds. Tap a syllable to jump to its row, then explore each sound's mouth shape and how it's made.
Touch the tip or front edge of your tongue to the roof of your mouth just behind your teeth. Keep your jaw relaxed. Stop the air, then release with a puff.

Round your lips into a tight circle. Lift the back of your tongue toward the soft palate and add voice.

Pull the corners of your lips back slightly. Arch the middle-front of your tongue high toward the roof of the mouth.

Touch the tip or front edge of your tongue to the roof of your mouth behind your teeth. Air flows through your nose.

Click any sentence to see the full breakdown — every link, every reduction, every flap-T.
The textbook way isn't wrong — it's just not how anyone actually says it.
Stress falls on the second syllable, not the others. Stretch TWEEN — keep everything else short and quick.
Don't pronounce the first syllable too fully. The unstressed syllable reduces to a schwa — the lazy "uh" sound — in casual speech.