Article submission, bookmarking, blogging, guest blogging, social networks, youtube, wiki sites, from forums, by my website(signature). Good luck! Cheers
Yes!! Guest Blogging is an awesome platform to build quality backlinks to your site..... If you want a list probably i can share it here.....
Search free back links. you will get tons of back links . but first start from directory submission then go other area.
I've written 12 ways to get free backlinks in http://www.uniquewebsites.co.uk/resources/seo/how-to-get-backlinks.html and have given lots of sample sites for each type of backlink. Good luck!
There are lot of ways to get backlinks for free. But the question is , the quality of those links .I f you need really high quality links you have to spend a lot of money and time. But you can try www.backlinkings.net for some good EDU links which they offer completely free.
above all are all the ways, but i think first of all, your content should worth the readers to read. Then other people will link to your site.
some free backlink techniques : 1)Social Bookmarking 2)directory submission 3)Forum Posting & Commenting 4)Blog Posting and Commenting 5)Press Release Submission 6)One-way Link Building 7)Social Networking Submission 8)Link Exchange 9)video posting and bookmaking for video 10)Article Submission and etc...