How to do dance routine without thinking about it?

-Ok so im trying to learn a hip hop dance dance my friend showed me on the computer and theres a tutorial of it and im trying to learn.

I have the first part down by heart because its easy and the rest i kind of suck at. Im learning it bit by bit by myself because theres no actual good dance lessons nor studios down where i live

I never really had dance lessons before but i did dance a lot in my room to songs (and not like a stupid teenage girl does pretending shes a popstar) also im 13 , the thing is i could never remember any of the dance moves i did while in my room. I dont intend on taking hip hop lessons for while..probably not till school starts.. Im trying to become a good dancer by the time i get to high school (going to 8th when school starts) and for that im willing to dance as long as i need to even though it seems like i have a.d.d. and my memory is crap and i also have nothing to work with..i have a marble floor which i guess is decent, not to mention i told my mom i wanted to learn to dance and she laughed at me so i pretty much only dance in my room .

Oh yeah, so basically when i try to learn this dance routine, i get to the part im not so sure of and i end up having to think about it and get behind.



So i guess my questions are



1) How do you remember a dance by heart? Or at least remember what your supposed to do. (Counting does nothing but confuse me more, anything with having to think of something else to relate to the dance is just extra stuff to remember and does not help at all)



2) How to do a dance without thinking about it?





3) How long does it usaully take to learn a dance routine. (Please state what kind of dance you do ; intermediate beginner advanced?)



4) How long do you think itd take me to become a decent dancer?You need to drill it so that it is second nature. That's the only way you won't need to think about it. Otherwise you need to remember (and think about it).
first off: Practice a lot! then even when you are sitting somewhere think about the steps in you head. Play the song and go through the dance routine in your head. Hope that helps.
PRACTICE, PRACTICE, PRACTICE. (:
practice a lot like an hour a day