Complete guide on how to Install Applications in Ubuntu, starting with the basics of Ubuntu Software Centre, Using downloaded .DEB files, moving on to Pre-Compiled Binaries, then all the way up to Compiling from Source Code. Use the timings below to skip to different sections of the video: 0:18 Software Centre 0:46 Synaptic Package Manager 1:15 Adding Repository (I have done a more in-depth video on adding repos) 1:55 .Deb (Debian) files on Correct Architecture 2:58 .Deb files on incorrect Architecture (installing 32bit on 64bit sys) 4:00 Pre-Compiled Binary in zip file 5:46 Pre-Compiled Binary Installer 6:33 Compile from Source Code Further Info: Software Centre Can search for program by vague or specific description Synaptic More useful for installing specific packages .Deb on Correct Architecture Open with your File Manager Or Terminal: sudo dpkg -i package.deb 32bit Deb onto 64bit system sudo dpkg -i --force-architecture package.deb Pre-Compilled Binary in Zip file Unzip into /usr/local or /usr/local/games Alt+F2, then type: gksu nautilus (or kdesudo dolphin for Kubuntu) Drag folder into /usr/local Or Terminal: sudo mv FolderName /usr/local Pre-Compiled Binary Installer Make it Executable - Right click on file, select Properties, Permissions Tick Allow Executing File as Program In Terminal: ./program.bin Compile from Source Code ./configure Install any extra packages through Synaptic, make sure you chose the -dev packages. sudo make sudo make install