creating a page that links to an external page

guys, I don’t know if this is the correct way of doing this, but I want to create a link on the sidebar “Pages” that points to an external page, so I created a page, which makes it show on the sidebar. But instead of pointing to that page, I want to point to an external page on a different site.
here’s the site
https://sohotech.org
the link “blog” on the “Pages” sidebar, should link to an external site. I know this probably can be achieved with the link tag, but the question is where?
I’m using wordpress 2.8.4
thanks
blog:https://pctechtips.org