To gain traffic to a website is it best to add it to search engines such as 'Google' and how easy is it to do so?

Also is there other ways to get your website listed high on search engines?

Big subject really. Google Analytics will tell you how much traffic your getting. Google it :)

Content & links are what matter in a website, but don't go mad just to try and fool the search engines cos it won't work & can have the opposite effect.

lol