Happy 50ts birthday video

making a video compilation for my brother 50th birthday. I have 9 short videos from all my family sending my brother a message for his birthday. I have 60 photos of him / family photos to add in this video presentation. I want two songs to go on the background. One song at the start of the video with the photos starting from him as a child and the other song to be add perhaps after all the videos of the family.There will be a message to be add in the video at the beginning and one message to be add at the end of the video. At the end HAPPY BIRTHDAY.
Then I can save this video show in a usb so I can put in my laptop and show it in a screen for presentation . Thank you.