If you are new to Ubuntu and have installed various softwares, eventually there comes a time when you want the applications to start automatically just after the system boots.
Following are two ways to add applications to startup list. First is Windows method, while the second method is geeky way (as you must have guessed, it’s my favourite).

Easy method

Just like Windows have a startup folder where you can place shortcut files and which would let you start the applications when user logs in, in Ubuntu there is a ~/.config/autostart folder where you can place the shortcut files. (Just to recall ~/ is your home folder. So ~/.config = /home/username/.config).
You can also use the Startup Applications tool (ships inbuilt with Ubuntu) which lets you add startup applications to that folder. Shortcut files in Ubuntu are files which ends with .desktop. The folder where you can find most of the .desktop files is /usr/share/applications. So you can just find the desktop file related to the particular application and copy the .desktop file into the ~/.config/autostart folder.
If you want to start the application for every user then you would need to copy the .desktop file in /etc/xdg/autostart folder.