Fisrt you have to Login to your Site. This is done by going to your site and typing /wp-admin and then hit Return.
Here is an example: yoursite.com/wp-admin
Then hit Return and your Login Page will come right up. At this point you will need to input your Username and Password. If you input those correctly you will be taken to your Site’s Dashboard where all of the Fun Begins! Now you might be thinking oh my goodness there are so many buttons and options where do I begin? That will be determined by what you want to change. I will give you a slight over view of what you might be looking at on your Dashboard.