--Christine, welcome to YWS!
Well, it's great you've come here to review someone else's work! To do so, go to the Writing forums (up there in the menu bar), pick a category that interests you ("Dramatic Poetry", "Romantic Fiction" etc.), click a story that you'd like to review, and then you can either reply using the box at the bottom or click "Post Reply".
Play around with the codes if you want to use them for things like italics or quotes, and I'd recommend previewing your post before you submit it, in case you've made a mistake.
Hope I helped! PM me if you need any more help. =)
Blinky
(PS: please refrain from using chatspeak.

Just looks a little clumsy for a writing site.

)