I want that on a custom checkout page to have as a first step select checkout: login, register and checkout as guest. I have managed to login customer and then to remain on checkout page. When the user chose register radio button, I need to display the register form and to register the user and then to continue checkout process with the logged in customer. I am stuck with register form, so maybe you have an idea. enter image description here

  • May I ask why you want to register the customer on the first step? Sure it is possible but it could feel like a lot of work for what can be done by Magento just slightly differently with registration after checkout is complete. – David Manners Jan 25 '15 at 17:06