Hi thanks so much for the kind words. Before I go into talking about resources, I'll kindly confirm that your brothers are NOT romantic options (LOL) everyone else is far game :)
I understand how daunting it starting up. I'm self taught and very much a beginner in twine and coding, but I'll do my best!
Now for Twine resources, it does depend on which story format you wish to work with. Twine has about 5 different formats to choose from: Harlowe (the default), Sugarcube (which TSR runs on), Snowman, and Chapbook. Each format has it's advantages and disadvantages, but I personally use Sugarcube because my favourite IFs use it (haha) and it's has quite a few resources online. I cant speak for the other formats because I don't use them. But Chapel has an amazing breakdown on everything for twine and makes great plugin/macros for authors.
If you haven't created an account already, I do recommend creating a tumblr. Tumblr has a very large and supportive community over there with a lot of authors provided their own coding knowledge and resources to help out those just starting out. You'll be able to promote the game/story even before you're able to release it, so it's great for building a community as well. If you do decide on working in Sugarcube, I'll be more than happy to help out. You can always ask me a question over on Tumblr, where I am most active or you can toss me your discord on tumblr if you want something more private.
The hardest part is starting out, but anyone can do it!!! I am more of a visual artist before I am a writer or a coder, so it can be done!