Stay within your category, relevant content is very important to the search engines. Write an article preferably relevant in content to your website and submit the article to high quality article directories. Blogs are an excellent way to get quality one-way backlinks, Blog sites also receive tons of traffic, which in turn give your site more exposure. Posting your link on forum pages is also an efficient method of aquiring backlinks instantly.
Backlinks to avoid would be a zero page ranked webpage, especially if the home page has a zero page rank. Links posted within framed webpages which will also steal your traffic. Especially avoid link farms, webpages which contain more than 100 unrelated outgoing links, This type of link page is frowned upon by many major search engines. Avoid Webpages with mirror sites containing the exact same content with a different URL, also pages that utilize redirects and URL cloaking. Never post your link on a webpage that contains a "no follow" or "no index" robots meta tag within the source code. Dynamic websites with question marks in the URL should be avoided because they are not always indexed by the search engines.