@danielwilches Also worthy note to mention is collapsing the areas. Do as spike suggested when the mouse curse turns into a Cross-Hair/Plus sign you can alternatively click with the non-active mouse button (right click if you are a left clicker for everything or vice versa) and you get a context menu with a lot of options such as:
Vertical Split
Horizontal Split
(Join Areas) this one won’t appear unless you already have a split area that you want to turn back into 1 area again. Super useful if you want to simplify back again
(Swap Areas) this also won’t appear unless you have already split into 2 or more areas. It swaps between the two divided split sections between closest to your mouse.