Sometimes, DJ's do Masterclasses (I'm thinking about Angerfist & Dr. Peacock who did one months ago) where they show you how they produced some tracks, how they create kicks, etc... But it's rare, quite expensive (It was 100$ to watch the livestream, and twice this amount to go to the masterclass IRL if I remember well), and, with my example, it's not about Happy Hardcore. You can maybe find what you need on YouTube. In France we have some YouTubers (Felckin & YouTunes) who create music and they show and explain how they create this or that part, so maybe it's the same in your country.