Here are 2 great resources for learning the skills of performance driving. They are both geared toward racing but most the skills they teach also apply to HPDE.
- Racer360 is a collection of tutorials aimed at different aspects of driving. Many are free but other require a subscription.
- Driver61 has a great collection of video tutorials where a race driving instructor talks through car control and racing skills in a classroom setting with in-car video clips. You can also find his channel and play list on YouTube.
These are great to study now as track season is coming up soon. If you are new to high performance drivers education, check out this blog post: https://ltr.pca.org/high-performance-drivers-education-a-k-a-track-days-hpde-de/