The video tutorial covers various lip relaxation exercises aimed at improving flexibility and articulation. It begins with an introduction to the importance of lip exercises for sound production, followed by practical exercises like lip massage, blowing, and the fish face. The tutorial also includes vowel sound practice with jaw involvement. The video concludes with additional resources for further learning and acknowledges Tom's contribution to the exercises.

Explain the process of transitioning from the sound 'OU' to 'all' as described in the text.

Who taught the lip relaxation exercises to the speaker, and where did he learn them?