If you have google, you don't have to worry. just put the word "list of dofollow direcotories" you will find your expected result.
Please go through this link http://www.22seo.com/directory-submission-websites-list-1/ Huge list you will get...
Use mix of do-follow and no-follow. Don't create only do-follow backlinks. for list, search in google.
You can find the list of do follow directory Sites on Google very easily. Apart from this, directorycritic.com having a vast number of directory sites.
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There are many sites to search for dofolow links. one of them is directorycritic. you can find dofollow sites from here. good luck.
I've noticed that directories nowadays are not so useful for SEO purposes, maybe penguin update is reason