This is not a homework question, but a genuine question about math. I'm currently interested to learn again about math, but I lack the direction to which area to start and where to go after those. I'm planning to master math as a whole (if possible), and the thing I lack was the direction needed of what to learn and what to learn after said area.

Please help. I have this pic that I can't even comprehend and struggling to take directions from it. I'm an ESL so if my request is confusing, I'm very sorry in advance.