A algum tempo o Fernando Rizzato compilou uma lista de links bastante útil para quem utiliza RAD Studio, Delphi e C++, segue a lista:
Documentação do RAD Studio
http://docs.embarcadero.com/products/rad_studio
CodeRage (30+ webinars por edição)
CodeRage 8: http://www.embarcadero.com/br/coderage/embtc-gated-sessions1013
CodeRage 9: http://www.embarcadero.com/br/coderage/coderage-9-op-sessions
CodeRage X: http://www.embarcadero.com/br/coderage/coderage-x-op-sessions
Developer Skill Sprints (100+ webinars, 20 minutos cada)*
https://www.youtube.com/playlist?list=PLwUPJvR9mZHhZTajVWsgaFPLtDA-t1Xwc
FireDAC Skill Sprints (10+ webinars):
https://www.youtube.com/playlist?list=PLwUPJvR9mZHgjJ0JtSqJ-dv2cGtWr-jtq
RAD In Action (30+ workshops)
https://www.embarcadero.com/rad-in-action
Developers Direct (30+ webinars)
http://streaming.embarcadero.com/www/DevDirectWWW.dll/home
Migration Center
http://www.embarcadero.com/rad-in-action/migration-upgrade-center