Here are few crossword puzzles to beat winter blues
Cloud basics #1
http://amuselabs.com/pmm/crossword-manage?id=ca18d7a6
Cloud basics #2
http://amuselabs.com/pmm/crossword-manage?id=3f11d7dd
AWS prerequisites
http://amuselabs.com/pmm/crossword?id=48f6277f
Enjoy!