The only step of learning Japanese that I consider hard is memorizing Kanji.
Using them later becomes easy but what can make the learning complicated is that for example:
Let's say that I don't know any kanji and I want to learn by reading: "Oh I found this, how do I pronounce it '何' ??? .... ): "
Learning kanji requires to read the dictionary or taking the info from some source.
Back when I learned English I could learn a word by reading it and understanding the context. "W O R D" was what I say, letters so I could pronounce it.
But kanji is different, It requires more "active " study to memorize.
Sometimes I think that kanji is in someway similar to the icons of the Apps on my phone.
For example the Icon of WhatsApp, when I see it I know it's WhatsApp,but that only because I have previously learned that.
Learning kanji is somehow hard but more than difficult it just requires time.
Actually I like learning kanjis, the feeling of "strange symbols " becoming words to ny brain is one of the best sensations that I could have experienced in my whole life.