Your RapidWeaver web site can have many different types of pages: blog pages, text pages, etc. And there are other developers that make other types of pages to add to your site. Stacks is one of those. It’s a type of page.
Stacks is a general purpose layout page. So you can build a lot of different types of things with it. People use it to build simple things (like a page with some columns) to complex pages with galleries, effects, and interactive content.
Stacks comes with some basic building blocks (commonly referred to as stacks – the verbiage that seems to have stuck after years is that a “stack” is one of the building blocks and “Stacks” is the name of the page style – believe me, that’s not how I intended things to be named – it kind of took on a mind of its own).
While the basic building blocks within Stacks are useful for laying out a page, there are ~1000 other stacks made by other developers and designers that you can download and use on a Stacks page. Here’s the big list: http://rapidweavercommunity.com/rapidweaver/addons/stacks
Some of those things free, other cost just a bit, and some provide access to professional layout systems and are more expensive than Stacks itself.
Stacks is “try before you buy” software. So you can wade in a bit at a time. Try the basic built-in stacks first. Download some free stuff. Give it a go. You don’t have to buy unless you find it useful.
Isaiah (I wrote Stacks)