To open a puzzle, select:
1) category
2) host or subcategory
3) site
4) puzzle by filename or date
5) Open command

Local category: Saved or built-in Sample puzzles; Saved puzzles appear also at end of Puzzles menu

Other categories/puzzles require an internet connection. For unregistered users, there are a few hosts/sites in 3 initial categories
* Authors
* Major Sites
* Newspapers/Magazines

For registered users, selecting a category adds/updates sites