Star chart help!!

[qwe)k]

About 3-4months i bought my first telescope (Celestron Firstscope 90 EQ) and ive been trying to grasp how to make my way around the stars using star charts. I can't make much sense of it.

 

I know the main constellations and I'm familiar with the night sky in London. I understand about star brightness and their symbols but could someone please outline simply and orderly how exactly star charts work with coordinates.

 

Also with my new telescope how do i apply the star chart coordinates to my telescopes equatorial mount.