this is really simple question. 

Im wondering how i should structure everything when i make next system[PHP OOP]


Adminpanel with features where you can add videos by next fields:
"Video name"
"Video URL in server"
"Video categories [ this one is tickable by tick buttons ]"
"button Send to Mysql"

now it puts it to 3 pages:
1) to news page[there is latest 15 videos added]
2) to category page, where you choose category and specified videos will be show to you.
3) to other page where you see all videos alphabetical.