seo backlink do follow

:confused: Hello, I am a new freelancer. I do blog commenting for building backlinks manually. Can anyone help me to do it faster? Any FREE automated software available? I've already Hired by a Buyer in oDesk. So, its urgent !

Hey guys, Relatively new to the SEO side. I was wondering- is it beneficial to post a d-o-f-o-l-l-o-w link on multuple posts on a blog, or will only one of those count? Also, does the PR of the domain itself count, or the PR of the post? Thanks for answering my dumb questions :D Rastar