Through reading LN text, I guess. I could skimp through half the vocab because of my Chinese background, but I can't admit that I am fully proficient in it yet. When you see a constant phrasing over and over again, it's best to search it up and see how it goes. Focus on the grammar first though.
lol sorry for responding so late. Just got back to my place recuperating. I was just traveling around within my state California. As you can tell I got some pics. up for the aqurium I went too. Later I plan to put pics on other places I visited like the Science Academy and then a beach university my brother went too.