DrupalCon Global 2020 will feature presenters from around the world on a virtual platform called Hopin (pronounced "Hop in!"). Drupalize.Me trainers Joe Shindelar and Amber Matz will be presenting sessions and participating in the conference. Both Amber and Joe's sessions will be on Thursday. (Times listed are in UTC. Convert to your time zone with this tool.)
I (Amber) will co-present with Gábor Hojtsy Deep dive: state of Drupal 9 on Thursday, July 16, 2020 at 18:15 UTC. We'll dive into details not covered by the Driesnote. You'll learn how new features get into Drupal and how old APIs and libraries get updated in Drupal's release cycle. By the end of the session, you'll better understand what's involved with upgrading to Drupal 9. (And how it's probably not as bad as you might think!)
Joe will present Altering, extending, and enhancing Drupal also on Thursday at 21:15 UTC. There are various ways to extend Drupal without "hacking core" and in this session, you'll get a great overview of what those options are and how to decide which method to use. By the end of the session, you should have a more complete understanding of what the use-cases are for plugins, hooks, services, and events and how (at a high-level) they are implemented.
Osio Labs' (the company that makes Drupalize.Me) sister company Lullabot also has a strong group representing at DrupalCon Global. Check out Lullabots Speaking at DrupalCon Global 2020 to learn more.
Finally, you might be wondering how contribution will work at DrupalCon this year. Contribution groups are being organized at the virtual DrupalCon Global Contributions Room. Browse and join groups or create your own if you'd like to coordinate a sprint for your own Drupal community project. If you'd like to help out with Help Topics (programmers and writers/editors needed), join the Help Topics group. (I am co-maintainer of the core experimental module Help Topics.)
To learn more about the DrupalCon Global platform and attendee experience, we recommend the DrupalCon Global 2020: Attendee Experience Preview.