How to install a new power supply?

Hi folks!

This might be a rudamentary question, but it there anything to have in mind when installing a new power supply? Or is it just to remove the old one, screw the new one into place and cram all cables into the new one?

Thanks in advance! :) 

Yea, it's pretty straight forward. the only thing i have problem with is cables smacking into things and getting caught on things.

Just keep them organized.

Thank you sir :)