Without more information what exactly you want to do/learn, that’s kinda hard. Racing? Acrobatics? Micros/Woops (flying in your home/garage)? Drone as a cinematic camera (DJI-style) or faster camera work (chasing motocross riders for video for example)?

Also specific recommendations for hardware heavily depend on this and just personal preference, and what else you might want to do with the radio and/or video equipment. As an introduction and overview, like someone else has already commented, check out Joshua Bardewell on youtube. He literally makes everything from introduction, basic tutorial, to advanced guides and deep dives into anything drone-related as his full time job.