to +rep click on the scales upper right corner of the "actual" post you want to rep and just type, also good if ya sign so they know where it comes from
to add a link go to the grow journal page (havre it on your screen) and click on the http address in you browser bar, right click and copy
then go to you profile page click edit sig and paste the link then click save
for reping some one just click on the blue flower looking thing above your join date and go from there.
as to the signiture thing i don't know the trick waybut all i do is copy the permalink in my 1st post to my journal and copy it in my signature. hopethis helps
It's pretty simple dude. If you're too stoned to figure this one out I don't think any of us can help you LOL. Try searching youtube for edit forum signature maybe.