Hey there!
I’m not even sure if it’s the right forum or category but meh. Couldn’t find a better place.
Anyways. I’m new here and I can’t even get started with Blender.
How in the world am i gonna get that makehuman category there if i wanna make a human? Am i supposed to get some kind of file for that? From where?
Yes my english sucks and yes i’m a noob.
Have a nice day and thank you if you’re answering to my stupid questions. 
I’m confused to what the problem is, to install MakeHuman? Running Blender with it?
You might want to check the forum for that software: http://www.makehumancommunity.org/forum/
While you’re new to Blender, you’ll need to learn how to navigate Blender and make use of its features: https://www.blender.org/support/tutorials/
I’d recommend CGCookie for their more pragmatic approach along with their basic navigation being complete free (https://cgcookie.com/course/blender-basics), but I expect people being too cheap to bother. But you gotta start somewhere and stressing yourself to know NOW isn’t going to help - one step at a time.
makehuman has no relation to blender. you need to figure out how to export it properly. thats not a real easy thing. best to ask those questions on the makehuman forum.