Mnemonics is a popular way of remembering kanji meanings (and sometimes their readings).
If you look up the kanji in the dictionary here, you can find thousands of user made mnemonics.
After a while, you will also notice that some parts and radicals also carry their sounds with them. This sometimes offers a clue to some of the kanji's readings.
For memorizing readings en-masse, Cure Dolly suggests the Sound Sisters method. I don't use it, but some find it useful:
Meaning - start calligraphy, look at the meaning of each radical and use your imagination! (renshuu)
Pronunciation - I advice you just to learn words and read sentences in renshuu, reading text and books on other sites. To memorise pronunciation - you have to be familiar first with the word itself because that will be the most common pronunciation of that kanji. Only then, kanji will be easy for you.
After all of that above, you need to understand what kunyomi and onyomi is - when and how the kanji (pronunciation) change depending on is kanji with hiragana e.g.
@🌸花の海🌸 I use different strategies for on’yomi and kun’yomi.
On’yomi generally follow the pronunciation of the phonetic component, so I learn to recognize the phonetic part of the character and memorize the readings of the various phonetic components. Since the pronunciation has often changed, I add the etymological history (from Wiktionary) to help me understand its evolution. Sometimes the readings shift so much that this isn’t effective: then I usually fall back on a mnemonic. Occasionally, I find it most effective to associate each on’yomi with a keyword and memorize that. When I was learning the first-year kanji, I would fill page after page of a copybook with these keywords, saying the word to myself as I wrote it. Maybe this is what カイリネ means by calligraphy, but using a brush and ink set will really slow you down. Maybe that’s the point.
Kun’yomi are just words, or word fragments, so I treat them like any other vocabulary item.
This strategy isn’t perfect, but it gets me about 80% of the way.