adding paypal to site

I pasted a header over the previous header. How do I remove the previous header

latest post on home page won't refresh to show actual latest post

Fix Facebook App

Can I install a Twitter plug-in on my blog to show my tweets in sidebar?

I'm told my Blog is connected to Facebook but the latest post doesn't appear

Changing Width Size of Blog

How do I view WordPress in a non-mobile format?

It appears that someone has stolen or copied my blog post onto their own blog.