You could also try Kanjidamage instead of the Heisig way, it uses vulgar mnemonics and rates kanji by everyday use instead just hammering as many into your head as possible, it even references similar Kanjis so you don't get them confused.

Nihongoshark has a good Anki flashcard file also.

Who knows, s/he might be faking it. (Sarcasm)

Kidding aside, I recommend that you read "Remembering the Kanji" by Heisig.

I tried Kanjidamage and the learning style just did not suite me. Not the vulgarity part, i am fine with that, but the lack of measured, spaced, continuous learning. I found WaniKani much more suited to my learning style for kanji.

For me, there's an ebook I downloaded from PuniPuni Japan, and I just write the kanji over and over again. It has stroke order, the meanings, and the readings, as well as example words and scentences. I also have a flashcard app on my computer called Anki. I also write down whatever kanji I see (sometimes).

tomaru vs tomeru. One means something is stopping, and the other one means something is being stopped. Transitive vs intransitive. Many Japanese verbs have their transitive/intransitive counterpart.

I think that de expresses an action. Car stopped. Ni expresses location that is parked. Not 100% sure though