Feeling overwhelmed by the amount of things happening when logging back into wow after a long brake since the beginning of DF.

Decided to start a new character to level up to 70 because I felt so overwhelmed by the amount of things to do when im so far back on my character. What should I do when I hit 70 in order to be up to speed on things? Tried looking on youtube, but there was alot of information there aswell. If anyone got any pointers to what I should do, or any good vids to watch would be much appreciated