Where to insert the Title?
In the Page Editor go to Page Properties.
or
In the Page Manager click on Properties for a page.
Title - SEO
Unlike the description and keywords search engines like Google, Live, and Yahoo, pay special attention to a pages title. The title is usually displayed as the title in the search results and displayed in the browsers title bar/tab. The title should be descriptive, readable, and include at least two or three of your big keywords. Some people say this one of the single most effective thing you can do for you site when it comes to SEO.
Since the title tags is often displayed in the search results, it is very important for the title give a very quick overview of you site so that any potential visitors might get attracted to your site. Title length is recommend to be between six and twelve words. You should make a unique title for every page on your website.