youtube promote

So I have been looking at fiverr to promote my youtube channel But Was scared so created a test channel to make sure these work and are within the guidelines I paid a guy to promote my video and got 1000s of views So what I can't figure out is Looking at the analytics it shows the referrals...

I was wondering if anyone has used the promote option when you click down on the arrow next to edit on a video? You get to input the dollar amount you want to use to promote, and then youtube runs an ad for your video on peoples videos. Has anyone used this? I put in to plan on spending $10...

Hey guys I have always wanted to know this. I know that twitter is a very important for promoting your youtube channel, but I don't know how to use it properly. Can any one please tell me how I can use twitter to my advantage? THANKS!!!!

I don't know if I want those close to me (or vague acquaintances as with Facebook) to see all my videos. I was wondering if anyone has had success without promoting to social media, and if so what did you do/ where did you promote? Edit: I don't mind some of my friends to see my content, but...