Easy internal linking

Hi. I fear I’m missing something here. In other CMS’s I’ve used it was easy to create links to internal pages (other pages within the CMS). Clicking the Internal Link button popped up a list of pages within the CMS. Does WordPress have a similar system (that I’ve missed)? I can do them manually (using the URL) but I’m if I’m setting this up for a 3rd party less web-savvy than me I’d like an ‘point and click’ method. I’m using WP because of it’s simplicity and elegance within the Admin section (so as not to overwhelm my friend!). Regards, Edward