Date: 2020may29
Product: Gnome
OS: Linux
Keywords: startup, program
Q. Gnome: start applications when you login
A. Go to folder ~/.config/autostart
Make the folder if its missing with `mkdir autostart`
Make a .desktop folder in there for each application you want to start.
Examples:
firefox.desktop:
[Desktop Entry]
Name=Firefox
Exec=firefox
Type=Application
terminal.desktop:
[Desktop Entry]
Name=Gnome Terminal
Exec=gnome-terminal
Type=Application
By the way, if you just want an application on your desktop put the .desktop files in ~/.local/share/applications or /usr/share/applications for all users.