.. for example http://imgur.com/ ?

Hello! Ill make this short and sweet:

Other users need not be able to create DB entries, merely be able to manipulate the data within them. It should be easy for me to add a new piece of data to every DB entry, based on common tags within the DB. Of course the users should be able to also browse or randomly roll entries based on those tags. Now, you can probably tell that I know just about nothing about database coding

My background knowledge, although it's been a while, is only in pHp and HTML. As you already guessed from the post lcotation, I suspect i need to learn some javaScript in order to achieve this.

Any help is much appreciated