At Jazz Piano Lessons Online we have a growing list of systematic and random tutorials.
These particular lessons will systematically take you through the basics and give you a great start.
Lesson 1 – How to Play 7th Chords
Lesson 2 – The 7th Chords of the Major Scale
Lesson 4 – Chord Voicings/Inversions
Lesson 5 – Axis of a 3rd and 7th Voicing
Lesson 6 – Open and Closed Voicings
Lesson 10 – How to use the modes to solo
Lesson 11 – How to practice the Dorian Mode
Lesson 12 – How to improvise using the guide tones
Lesson 13 – Using the Guide Tones to Create Awesome sounding 3 Note Chords