While FF Chartwell is a really cool font that you might want, it is also one of the most complex fonts we have available on FontShop — you may need to do a bit of research before and after licensing this font.
The #1 question you should ask yourself before buying and downloading FF Chartwell is: what program do I intend to use the font in?
If you’ll be using the font in design programs (such as Adobe InDesign, Illustrator, and Photoshop), you’re usually good to go. As long as the program can handle stylistic sets and contextual alternates, you’ll be able to use FF Chartwell. Of course, there are exceptions: most notably, color versions do not work when using QuarkXPress. Also, FF Chartwell Bars and FF Chartwell Bars Vertical are the only styles that are currently compatible with iWorks.
One of the best things you can do before getting your hands on this particular typeface is to read the FF Chartwell User Manual. FontFont has also dedicated a few pages on using FF Chartwell, including a video on How to Use FF Chartwell.