Enter the name of your new category (i.e Dining Chairs) and if relevant, associate it to a parent category page (i.e Chairs).

Configurations (configurable products) - There's a really cool new option on the Product Details tab that allows for the creation of configurable products during the process of setting up a simple product. Let me explain...

Let's say you want to add a product to your store (i.e a hat) and this product is available in two colours (i.e green and orange). To create such a product in Magento 1, you would have to create two simple products, one for each colour variant (i.e sku1 = HatOrange sku2 = HatGreen). You would then create one parent product (configurable product) and finally you would associate the two simple products to that configurable product.

In Magento 2, the process of creating such a product is a lot more intuitive and therefore a lot quicker...

Let me walk you through this process by creating the hat product: