Try to write high-quality articles, as they are more likely to get your site the kind of attention you're looking for. The beauty of articles is that people may click on the links when reading your article, but even if they don't the search engines will find your link and that can help get your site closer to the top of the search engine results.
Submitting to many directories is one of the easiest link building basics. You will find a lot of free ones, though some will call for a listing fee. Nonetheless, your main concern with running a profitable business should not be cost, but instead the value for what you have. If you spend a lot of time submitting to free directories which do not help, then you have wasted your time.
Among the most popular link building basics is social bookmarking. Sites like Technorati, Digg and StumbleUpon are used by a lots of people to find new sites and they will share the ones they enjoy best.
The best thing about this tactic is that you could have a great deal of exposure in a short amount of time if it strikes the correct chord with the bookmarking site's users. Furthermore, it will likely be more targeted traffic, meaning it's more likely to convert once it reaches your page. Publishing content that's easier for people to share--and contains links back to your site--is another smart move. When a lot of people start spreading it, it really grows exponentially. At this point it is referred to as "going viral". In the real world that has negative connotations, but it is pure gold in the virtual world of the internet.
These are just a few of the link building basics you must know. If you are seriously interested in making money, you'll need to do more than just learn about ways to get more links back to your sites. You should take action. Put the above tips to use and also look for other linking methods so you can do even better.