Submit Article, Guest Blog post, PR, Doing SB, and other Off page activity that give you back links to your site.
Their are many things depends to get PR or good quality links. But its very simple, Everyone suggest do submission, comments, guest post, article to generate PR links and its works too but if you want to get PR links from brand or reputed sites, you should build a good website along with high quality & unique content. It Should be user friendly. Make sure your website describe everything about your service or product, and time to time make some changes on your website.like services update, Current trends etc. if you follow these things this will help you to get high pr back links from reputed sites. Because reputed sites only give back-links to that site which have good content, relevant info. if you are doing any kind of SEO work, SMO work on SMM work on this site. you will defiantly get High pr and good back-links for reputed or DA sites.