Or you can simply post a couple more times and you'll be able to post links.
I assume you understand why we don't allow brand new members to post links? Yeah, we've got a spammer problem, like the rest of the web.
Real people spammers, that get paid to act like actual humans, to push get rich, get something, schemes, we've got Robots/Web Crawlers hitting hard daily.. the only way to keep the site from being overloaded with bogus sales pitches is to do things like, not letting new members post links on their first day/first couple of posts...