Dear Friend,
Just remember, quality is more important than quantity when it comes to link building. If you want to promote your site then you put relevant link.it mean you put your site URL on you site related product/information categories.its more benificial for you as compare to more back link submission.
first of all your content is rich in keywords you want people to find you with -- using 5 to 7% density keywords. You all do post your link on related to your site categories.
................Have a Nice Day
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