I know that there are tons of useful videos out there for free on YouTube, Instagram, etc... but I get lost with too much information.
Started looking for some well defined, full programs out there and I came across this site
https://www.championshipproductions.com/
For example, for 400m
https://www.championshipproductions.com/cgi-bin/champ/c/Track-Field/400-Meter-Dash-3016.html
Anyone aware of these videos? Which ones do you recommend?