Hello, Sarayeh Danesh! Welcome to Wikivoyage.
To help get you started contributing, we've created a tips for new contributors page, full of helpful links about policies and guidelines and style, as well as some important information on copyleft and basic stuff like how to edit a page. If you need help, check out Help, or post a message in the travellers' pub. If you are familiar with Wikipedia, take a look over some of the differences here.
Please make sure to always put descriptions in English; addresses in Farsi may help, but descriptions in Farsi are entirely inappropriate for English-language Wikivoyage. Also, have a look at Welcome, business owners and Wikivoyage:Tour in case the tour agency and language service is your company.
If you have any questions, please ask them below (in English - not sure who else on this site speaks Farsi), signing at the end by typing 4 tildes (the ~ key) in a row.
Thanks and all the best,