In her last mail answer on her blog, Emily @emshort Short lists a ton of resources to learn and master Interactive Fiction! Check it out! #IF
Mailbag: Self-Training in Narrative Design – https://emshort.blog/2019/01/08/mailbag-self-training-in-narrative-design/
This is a private instance. Sorry.
Go check this list of instances or this website to find one suitable to your needs. :)