Question   Currently my home page shows the order page. How and where do I edit my homepage?

A. When logged in as the admin go to 'Edit Pages' then click 'Edit Order Page'.
Also, you can edit the html for the page by editing /adminpages/order.html

A. To put the button (~orderbutton1~) on the order page you would paste the code ~orderbutton1~ where you want the button to appear.  I'm not sure what you mean by dynamic.  If you mean that you want the payment to go directly to the member then you would need a pro system, with the commission tracking plugin, with direct payment turned on, and then you would link to the join page and payment to the member is made AFTER they create an account (a key difference as direct payment works opposite from a normal system).