I have a bookwyrm account, but I just found it too frustrating to use regularly and I need something with very little friction if I’m going to use it at all. My hope is it improves as it ages. I like the interface and general features of The Storygraph, but its private equity backing concerns me, my personal favorite though is Hardcover.app. It’s got a funding structure that is super close to being self sustaining and there are plans to open source as soon as they meet their expectations for the base app features and interface. I’m JaymesRS on all of them.
You can honestly go many ways. I’d recommend Wizard of Earthsea or Left Hand of Darkness depending on if you want fantasy or Sci-Fi. The Word for World is Forest is also great. Her short stories like Those Who Walk Away From Omelas are quick and thought provoking too.