Building a computer need advice on parts.

[JWildOnes]

I am building my first computer and I would like to know if I need to know anything before I buy and build it, also, should I change any parts.
I don't need ram or storage because I am taking them out of my old pc.
http://gyazo.com/1794e71c41f604cab747adc4fa5f543a

 

[badboyrog2]

EVERYTHINGS IS PERFECT AND AWESOME!!

except for the PSU ...choose an XFX/SEASONIC/CORSAIR CS OR HX SERIES

 

[JWildOnes]

EVERYTHINGS IS PERFECT AND AWESOME!!

except for the PSU ...choose an XFX/SEASONIC/CORSAIR CS OR HX SERIES

Thank you.