Many new comers are afraid of that “haunted Terminal”. Why open a console when you can do it via GUI? This article is not against the use of terminal but for noobs (and pros too) these GUI tips may prove more productive. How many times have you thought to “configure the boot menu” or “change mount points” but afraid of it because you have to enter that “Haunted Manson”.
1, 2, 3 are packages and can be installed via Synaptic Package Manager (another helpful GUI for managing packages) and then searching for it.