Creating an email account is pretty simple, here are the steps you'll need to follow:
Choose which email service provider you want to open an account with. I am a fan of Gmail for its ease of use and simplicity, so I'll use that as an example.
Visit the home page. In my example, it is Gmail.com You'll be offered the choice of signing in (ignore that), or "creating an account" (select that)
Fill in all the details required. Email sign up processes have been tested and retested countless time to ensure they are easy to navigate and complete - so I'm guessing you won't need a step by step guide from here.