Active Email Link in Header/Header Right Side

How do you make an email address an active link in the header? Basically, you can click the email address to email me http://www.soundmasterdjs.com How do you add content to the right side of the header? I ask because when I changed the background color to black, I also changed something else because none of my social links appear. I appreciate any help as I know just enough to ruin my website. Thanks