Go to your login page: http://www.yourwebsite.com/wp-admin
You should come to a page that has this login screen:
Enter your username and password.
Click on Pages in the left hand column of your WordPress admin area.
You will be taken to a listing of all the pages in the website. You may need to page through to find the one you are looking for. When you find the page you want to update, click on it. From here you can do most everything you need to do. Use the formatting tools to change the size of the font and to make other changes, just like using microsoft word.
To Make a Link, Highlight the text you want to make a link. Click on the link button at the top (it looks like a chain link). A box will pop up. If you are linking to an external page, enter the address in the URL box. If you are linking to another page on the website, select that page from the list. Press Add Link.
When you are ready to publish, you’ll want to find the Publish box on the top right side of your page. Choose the Update button.
It’s as easy as that.
Still having problems? Give me a call and I can help you out. 919-724-4417.
Or if you’re having larger problems: 
Maybe you are the type of person that would rather read a guide book? Check out this WordPress for Beginners book on Amazon.