I want edit videos and if you have one free open source option to indicate I am thankful.

Shotcut.

https://www.shotcut.org/

Thank you very much.

If I recall you use Windows.   If you can install Linux as a dual boot Kdenlive is great!   https://kdenlive.org/    http://www.openshot.org/download/ is another great option.   Both free.   Installing Linux as a dual boot on your computer isn't hard and if your Windows 'side' ever goes down you can still use your computer.   http://www.howtogeek.com/214571/how-to- … n-your-pc/