My advice would be to continually write relevant and useful content, while submitting to RSS directories, etc. If people read your material and find it useful, some of them will likely link to it, and that’s where the fun begins.

As you publish more content and get more links, you will eventually become a trusted source within your industry. At that point, you should start contacting the owners of related sites, and politely asking for blogroll exchanges. As you amass such exchanges, you will notice your search engine ranking (and traffic) slowly but steadily move upwards, to previously unattainable levels.

Just remember the basic theory behind it though. Quality content comes first, then links will begin to form naturally. For those who have knowledge, and are willing to work to articulate it, blogs are perhaps the easiest medium to express ideas, and attain backlinks.