What is Reddit's opinion of Read Japanese Kanji Today: The Easy Way to Learn the 400 Basic Kanji [JLPT Levels N5 + N4 and AP Japanese Language & Culture Exam]?

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Different approaches for kanji are going to suit different people, so this is just what helped me. Put on kanji if you're more than a few months into learning - its easier in the long run to learn the word's usual spelling (if its with kanji) when you first learn it. If you have an app that shows furigana that's always nice too - when it shows hiragana above new kanji. A lot of mangas have furigana for some kanji, which may help sometimes. If you wait to learn the kanji version of the word then you'll have to learn that part later.

This part is going to be different for different people - if you find kanji difficult to get used to at first, for me I found it helpful to study kanji a bit themselves before adjusting to just learning them as part of words. I thought the book by Tuttle Read Japanese Kanji Today helped a lot, its free in a lot of libraries and college library databases as an ebook. Some people also go further and study kanji with Heisig's Remember the Kanji, Kodansha Kanji Learner's Course, kanjikoohi, etc. While all of them may be helpful, I liked the Tuttle book because it was just a few hundred, gave me practice learning how to recognize radicals and start learning kanji myself, and then I could apply that to learning regular vocabulary. I found when I spent too much time learning kanji in isolation (like with RTK) then I personally just spent months on very few kanji instead of learning vocabulary which would've speeded up my progress. So for me, just some basic practice learning to learn kanji, then moving onto learning kanji in words worked best for me.

Also there's an app some people learn kanji and vocab on - I think it's Wanikani. I have not used it but that may be useful.

I read Read Japanese Kanji Today as a start and I found that quite helpful. https://www.amazon.com/dp/480531432X?ref=ppx_pop_mob_ap_share

Otherwise I use worksheets that I get from JapanesePod101.com and a few workbooks that I've picked up