Welcome!

Hello, سجاد رضایی, and welcome to Wikipedia! Thank you for your contributions. I hope you like the place and decide to stay. Here are some pages that you might find helpful:
The five pillars of Wikipedia
Tutorial
How to edit a page and How to develop articles
How to create your first article (using the Article Wizard if you wish)
Manual of Style
I hope you enjoy editing here and being a Wikipedian! Please sign your messages on discussion pages using four tildes (~~~~); this will automatically insert your username and the date. If you need help, check out Wikipedia:Questions, ask me on my talk page, or ask your question on this page and then place {{help me}} before the question. Again, welcome!