You need a textbook. The University of Texas has put their entire first-year course online. You can download the textbook in pdf form, and you can access the audio and video files online or download them. Here is the link: http://www.laits.utexas.edu/persian_teaching_resources/

@Amir: I have seen that course you mentioned, and it looks good. The problem is that the start page is entirely in Farsi. To use the course, an English speaker needs to feed the page into Google translate to find out where to start learning the script :P Someone should suggest multi-language start page.options.

The only Persian I know

یکى بود , یکى نبود

would anyone like to help me continue my story?

I have access to the following resources:

A book: Living in the Antechamber of Death: Compiled Short Stories of Political Prisoners in Islamic Republic of Iran
by Ali Abani

Access to libraries with: a full copy of Shanameh, a Farsi dictionary

The internet