If you are like me and learning about wines, a good site is Wine Folly, winefolly.com. I think that they even offer online courses. It might be fun to take a class.
Also, our local wine lady, Wendy Lamer, has a website for her store, The Disco Ranch:
https://www.discoranch.com/. She is VERY knowledgeable about wine and has won several Awards of Excellence from Wine Spectator, in spite of the fact that she's located in our teeny tiny town. She has a curated collection of wines available from all over the world and you can download her list of available wines. It's a good reference, if nothing else. (Not a plug, really. I don't know her that well, but her site and wine list are an interesting read.)