You could go to this Iranian association called "Verein Iranischer Flüchtlinge in Berlin e.V.", they offer computer course for free.
The location is Reuterstrasse 52 - 12047 Berlin, it is not directly located where you live but it is really easy to get there. For example, if you take the U8 at Alexanderplatz station, you need about 20 minutes to get there without any change!
Please contact them to know when are the class that would best suit you!
Phone: +49 (30) 62 98 15 30
Monday: 11.00 – 14.00
Tuesday and Wednesday: 10.00 – 13.00
Thursday: 13:00 – 15:00