You can print samples of your fonts in two different ways.
The first way is as part of a catalog. With the Catalog tab selected, you can select the page of the catalog that contains the font of interest. Just press the Print button, to print the page. You can also print the entire catalog or just a few pages by changing the page numbers in the Print dialog.
The second way to print a font is to select it in the Collection or Files tab, and press the Print button. This will print a fixed format, full page sample of the font. If you want to look through a folder of fonts and only print a few fonts, select the folder, and press View. While in the View dialog, press Print then Next for the fonts you want to print, and just Next for the fonts you want to skip.