Japanese Students/Fluents, Give me Your Advice!

It are not just words Minion, you have to look at the other characters accompanying the kanji, you have to know how to read it (some have more than one reading), you have to look at the context, you have to know the words that the kanji can represent. It can be very stressfull, because even knowing the kanji and it's readings, there are always exceptions.

Jam it back in, in the dark.

I have to agree on the grammar aspect, but when it comes to kanji, I think you'd be surprised. In Japanese, there are a lot of meanings for rather simple verbs like 'deru/dasu', or 'hanasu'. They all have different kanji readings and there are even more exceptions than I know of. Aside from that, the 'on'-readings are even worse, since I can think of at least 40 or 50 kanji that have the same on-reading, making it a pain in the ass to learn them, especially when they don't have a defined meaning.

There's nowhere I can't reach.

It's normal for people to be scared of a totally different language, that has nothing in common with your mother tongue. I know I was. And it's not something for everyone to learn, I've seen people studying day and night, and still not being able to learn it, even after doing the year again.

This thing is sticky, and I don't like it. I don't appreciate it.

You rarely have a clue. Even if the signs where based on real things, they have evolved so much that you have to be really imaginative if you want to find it's meaning. Can you recognize a fish in 魚?

I am a dolphin, do you want me on your body?