Toolset Views gives you a simple GUI to choose what content to load from the database. Views GUI is easy to use, but replaces many hours of PHP coding for you. Anything that you can do with WP_Query, you can do with Views, just easier.
Using Views is like having an expert programmer, developing what you need instantly.
With Views, adding filtering, limits, pagination and advanced AJAX effects all take minutes and require no PHP.
See also the Toolset Bundle.