Start by watching this video to get the sound of Mixolydian in your audiation.

Resting Tone

Tonal Sequence

Mixolydian Etune #1

Essential Harmonic Functions

Practice these Tonal Patterns in Mixolydian

Simple Tune

Voice Leading

More Mixolydian Videos

Harmonic Loops - I & VII

Mixolydian Tunes

Tonality Cheat Sheet

Download this free PDF guide to help in organizing the  tonalities.