How realistic is it for me to learn Japanese so that I can experience Anime better? How long would it take to learn? Has anyone attempted this?

I currently have to use Subtitles, kinda annoying. And I despise dubs since the voice acting is so bad, I mean like the emotions in the voice, its so emotionless in English.

I am a English speaker with some fluency in Cantonese and Mandarin.

How difficult is Japanese? Am I gonna waste a lot of time?

Also what's the best resource to learn?