You blog, other blogs link to your blog, you link back, and Google loves that.
Update (see below)
In case you are new to the genre, Weblogs take two canonical forms:
A Weblogger surfs the Web and links to items of interest. One may provide a bare, unadorned link, a link plus an excerpt, or both of those plus one’s own pithy commentary.
diary or journal
One keeps a regular or irregular journal online.
It is quite possible to combine the forms: You can write about your life, which itself includes the Web-surfing you do.