To allow swear words in voice recognition, go to Settings - Voice input & output - Voice recognition settings. Then untick Block offensive words.
By default, the phone will actually recognise swear words, but will insert x's instead of the word.
While in the Camera app you can view all current settings by pressing and holding the little Gear icon in the top right corner of the app.
To change the backlight screen timeout, go to Menu - Settings - Display - Screen Time Out.
Then chose the screen time out duration.
To change the screen brightness, start from the Homescreen and press Menu - Settings - Display - Brightness.
Then choose the desired brightness setting. You can also select Automatic brightness to let the phone decide for you
If you have auto-brightness enabled, you can also press and hold the notification bar at the top. Then move your finger left and right to adjust the screen brightness..
To find out information about Signal Strength, Network Information, Remaining Battery Time and Battery Usage (by Application), go to your Homescreen - Menu - Settings - About Phone.
To disable / enable vibrate, start from the Homescreen and press Menu - Settings - Sound.
Then under Feedback you can adjust certain features like Audible touch tones, Haptic feedback and so on.
Android has a feature allowing you to update Applications automatically. This is turned off by default, but you can turn it on.
Open the Android market, then Menu - My Apps.
Then you need to open up each installed App and tick Allow Automatic Updating at the bottom. Unfortunately you do need to do this for each App.
There is an easter egg hidden in the Android operating system. To see it, go to your Homescreen, then press Menu - Settings - About phone.
Then tap on the Android version option 5 times and you will get a surprise.
Sometimes it doesn't work, so try a couple of times. By the way don't expect to see an actual Easter Egg. That is just the name given to things hidden inside software or operating systems.
While viewing your list of Contacts you can swipe from Right to Left to send a text message to the selected contact.
From the Contact list or the Messaging list, swipe from Left to Right to call a Contact.