The video spans a little over a year. 6 months for windmill, followed by a 4 month break, and a little over a 2 month period to learn barrel windmill.
In terms of tips, the best advice I can give is to practice consistently. The reason for some huge gaps in time, as well as lack of progress, was due to injury, lack of motivation, vacation, and so forth.
And yes, the first part was indeed recorded with a potato.
Song: Invincible - MC Mong
