Documentary Draft

My documentary is going pretty well, i am working with people that i know that are good at editing videos because i'm not very good at it. I have been having difficulty uploading my videos and interview to youtube because they are more than 3 minutes long. I have them on my iMovie but I'm not sure how I'm supposed to post them on here because the blogger video doesn't allow anyone to view it! I have found the most difficult part of this being the uploading and editing part. I am having the hardest time technologically because i have never done anything like this before. I would love for all of the interview to be in my documentary but i found that it was too long so i need to edit it. Overall, I just need more help on the uploading and editing of the videos. My interview is the strongest part of my documentary and now i just need to add a few things.