One thing that the new blogger will hear much about is content. It is highly suggested to have a decent amount of posts (content) on your blog before worrying about having your blog become a money-making adventure.
Without content, you will not have a following. Without a following you will not have many companies that want to put ads onto your site. Without ads on your site, it’s almost impossible to make any money, unless you are an affiliate or selling something on your site.
Even if you want to become an affiliate, the companies that offer those programs want to see traffic on your site first before allowing the alliance.
Much Ado About Freelancing ... (and writing in general) 