first i need to find a good video editor lmk it would be very appreciated , all the movie i take with my iphone are on the left side, i want to put the image up, and also with my gopro , mp4 field, idk witch program to use and since im not good with it im iso some1 that can explain me how to change it / add music/ cut some parts, lmk thansk!

nobody can help me ?

up

Just use Windows Movie Maker. Anything else would be overkill for simple cutting. However, some that I recommend would be Adobe Premiere Pro or Avid. Avid is retarded expensive, as you need to purchase hardware with it.

yeh its what i was using but my gopro use mp4 files so idk how to put it on movie maker

google is your friend bro. if it's free then i would use that. you aren't doing anything that requires you to pay for a program.

thats my problem ive try alot on google and none work, ive find a good one, got it on mp3 file but i dont see the video, only heard the sound..

I recommend you to use Sony Vegas and google some guides for it.
If you have no idea how even to use it, try youtube videos.