I'm developing an online shopping website using HTML, CSS and Bootstrap. I just got stuck.

  • How do I create a responsive shopping cart that adds up all the shopping items/products and gives a full details and total price of items bought at checkout?

  • How do I access the login details of users that registers on the website? i also need to know what they have ordered on the website. how do I do this?

  • How do I handle the register or login part of the website?

I've never created a website that requires login or register or handled forms.

Please help. Thank you all.