Can I see in my shopping cart when I qualify for free shipping?

Yes.

At the top of your shopping cart, you'll see a blue bar.
This shows the minimum order amount for free shipping in your country.

You can also see the total amount of your order.
By comparing this with the amount in the blue bar, you can tell how much more you need to add to your cart to qualify for free shipping.

Free shipping is only available for customers with an account.
So it might be a good idea to create an account before checking out.