“Pro se” is a Latin phrase meaning “for oneself” or “on one’s own behalf.” A party to a lawsuit who does not have a lawyer, but instead represents himself, is appearing in the lawsuit “pro se.”
You will find the instructions and common forms necessary to file an Idaho Diversity Complaint or an Idaho Federal Question Complaint on this page.
You may pay the required filing fee which is designated under the Fees section of the Court's web page, or you may file and In Forma Pauperis Application; meaning without fees.