I'm a newb when it comes to developing on the SF platform.  I've got experience with web application development, but like I said, I'm new to this.  

So I'm trying to create a VF page that will renderas="pdf".  The information will come from the Account sObject that will have use the information from custom fields.  It'll be really easy to make accept for that I can't make an pages in an active org.

I start the dev console > New > Visual Force page

The console looks like its already to go, but I can't save as an alert box pops up with the following:

Deployment Failed
Can't alter metadata in an active org

Right now the only thing that is typed into the editor is:
<apex:page>
</apex:page>

So how do I go about developing a page?

I'm a newb when it comes to developing on the SF platform.  I've got experience with web application development, but like I said, I'm new to this.  

So I'm trying to create a VF page that will renderas="pdf".  The information will come from the Account sObject that will have use the information from custom fields.  It'll be really easy to make accept for that I can't make an pages in an active org.

I start the dev console > New > Visual Force page

The console looks like its already to go, but I can't save as an alert box pops up with the following:

Deployment Failed
Can't alter metadata in an active org

Right now the only thing that is typed into the editor is:
<apex:page>
</apex:page>

So how do I go about developing a page?