What method of advertising to use in affiliates?

Forum Posting, Blog posting, video submission, article submission
directory submission, social networking, social bookmarking..
those are some methods used...
backlinking is one good way too..
you have to get links with related sites..
quality and trusted sites are recommended..

Web Directories,Forum Posting,Article Submission are the best way...

There are a lot of procedure such as
-blog posting
-article submission
-press release
-directory submission etc.

The first of the two major key elements to consider is value. This is perhaps number one when it comes to building a quality list. If you offer something that’s valuable to someone subscribing to your list, you will build a relationship with that subscriber. In addition, though, that subscriber is also likely to pass on the information to someone else and bring more subscribers to you. What you need to give subscribers, then, is important information, discounts, quality content and a connection to you as an expert in the field. This will be invaluable to you as you increase the number of members on your list.

I think forum marketing and article distribution would be best ways to move.

I think SEO is the best way to go, but its tricky to learn