Don’t want to sound negative, just want to share my observations as someone who’s been actively learning Japanese for a couple of years. I much prefer how Japanese people actually teach verbs: 一段 (ichidan), literally "1-step"; 五段 (godan), literally "5 steps", plus a few exceptions sometimes called irregular verbs. It's not hard; it makes sense, just some textbooks (e.g. Genki) teach it really bad.
Learning Japanese is about learning a new way of thinking and structuring your thoughts. The more you learn, the more you realize it just doesn't fit into the English world. You can't really translate Japanese into English without losing nuance — and sometimes that nuance is important. So start early and start training your brain to think in the language, instead of trying to translate it and force it into English or some other language brackets. It won’t work; it won’t make sense; you will get stressed and confused.
Learning Japanese is about learning a new way of thinking and structuring your thoughts. The more you learn, the more you realize it just doesn't fit into the English world. You can't really translate Japanese into English without losing nuance — and sometimes that nuance is important. So start early and start training your brain to think in the language, instead of trying to translate it and force it into English or some other language brackets. It won’t work; it won’t make sense; you will get stressed and confused.