New to twitter, a few QUESTIONS if anyone is willing to help me out !?

[JerseyTaughtMe]

I joined twitter because I'm going to the Americans Most Wanted Tour, and I wanted to follow drake and Lil Wayne to see if maybe drake is making a surprise appearance on the AZ concert ..

So I actually replied to one of drakes 'posts' and I was JW if he actually see's the replies, and if I can see where I replied to him on his page?

also, why are random people following me when I don't even know them .. how can I make them not follow me anymore?

Also ! I cannot upload a picture, or a background to my page, I don't know the site may be down or something still ..

so there's no like comments or msgs or anything? I know nothing about this .. ha ha ..

if anyone could help I would appreciate it ! thanks so much .