One important aspect is to build your kanji knowledge. You can use kanji learning apps like WaniKani. For grammar, Tae Kim's Guide to Japanese is a great free online resource. When it comes to novels, start with short stories first. There are many collections available online. Try to read with a dictionary beside you to look up new words. You can also join Japanese language study groups where you can discuss novels and language learning tips with others.
Well, for learning Japanese for novel purposes, consider using language apps like Rosetta Stone. It provides immersive learning. Another great option is to find Japanese language podcasts that focus on literature or storytelling. They can help you get used to the flow and vocabulary used in novels. And don't forget about Japanese language schools or community classes if you prefer in - person learning.