Any 3D experimentation I've done was made possible by the great work of Devon Ko and Perry Cooper.
Devon is the mastermind behind 3Dfordesigners, an amazing resource and community for designers looking to dip their toes into the waters of 3D. Without it, I would likely not have begun my 3D journey. Beyond that, she is an inspiration in her own right; be sure to look at her work.
Perry is a 3D powerhouse on Instagram who has a robust YouTube channel where he generously breaks down his process in an easy-to-follow way. If you're into practical tutorials that demysitfy some of the process take a peek at his work.