This gist shows you how to install Opera 40 on Ubuntu 32 bit

install-opera40-on-ubuntu.md

Launch your terminal then follow the following steps

First grab the deb package using wget wget http://download4.operacdn.com/ftp/pub/opera/desktop/40.0.2308.62/linux/opera-stable_40.0.2308.62_i386.deb

Next install apt-transport-https and libcurl3 using apt-get

sudo apt install apt-transport-https libcurl3

Next install the deb using dpkg utiltiy

sudo dpkg -i opera-stable*.deb

Refrenences

Techiediaries