For Windows

• install then copy opera to usb
• setup portable flash player plugin
  • put NPSWF32.dll in ./program/plugins (which is located at c:\Windows\system32\Macromed\Flash\)

For Linux

• download the tar.bz file
• tar -xvf OperaAppName.tar.bz
• run by ./opera
• setup flash player plugin
  • download flashplayer tar file
  • tar xvf install_flash_player_10_linux.tar.gz
  • copy libflashplayer.so into ./opera/usr/lib/opera/plugins
  • config opera to path: Tool menu > Preference > Advanced tab > Content option > Plugin Options
    • add the path to plugin path
• add-on manual ref: http://www.opera.com/docs/linux/plugins/install/

• ad block
  • https://addons.opera.com/en/addons/extensions/details/opera-adblock/