Eicra_com - Designing new blocks

A Block is basically a data resource for Views. It uses the sites Models, grabs the data, makes any necessary adjustments, and then makes that data available to a View. For instance, when you override / create a Block that calls a product collection, that product collection is pulling some products' data from a Model. The Block is where you create such a product collection and implement the product collection's methods, such as adding filters or ordering the products in a certain way. That product collection is then made available to your View so you can display the products on a page