These are free groupings of videos that already exist on the channel, sequenced so the same language comes back across several lessons. There is nothing to buy and nothing to sign up for.
4 lessonsWhy English pronunciation fights you, what your first language has to do with it, and how to keep going.
5 lessonsThe individual letters that misbehave most in British English, in the order they cause trouble.
4 lessonsConnected speech and accent variation — the reason you understand the textbook but not the pub.
Every lesson in every path is a free video from Lean English Pronunciation on YouTube. If they help, subscribing there is the thing that actually supports them.