Forum:Info about LOTR world

Hi i am a newbie into J.R.R Tolkiens amazing world. i read many of the books. one thing i dont understand is. i see the middlearth map but i dont see old areas like hitlum,Dor-Lomin or numenor? what happened to them? are they in middlearth just new anmes? would be very nice to get some answers!

One Wiki to rule them all!

P.S some link to learn evlish language would be very helpful too (more oraly than grammar)