So I just got an Amazon EC2 Micro instance. I installed Apache using
yum install httpd. But now, how can I get Apache to run? If I run
ps -A it doesn't say that its running, nor when I go to
ec2.chigs.me. How can I start it?
Depends on the distribution you've installed. Since you used yum I guess it's CentOS/RedHat/Fedora or similar. Try