I always update Wordpress when an update is available, straight in the admin panel with no backup. It's never failed (errr...).
Here i use a very jacked theme:
Custom widgets, fonts, etc:
To play with fonts:
- go to google fonts and find some cool ones
- adjust functions.php to load the new ones
- adjust style.css to use them; you should consider font family, size, and weight of at least these 4 things:
body #content h2 pre #sidebar ul
- restart apache!