This information is written assuming you are using Windows 10 in the Non tablet mode. If you don't know which mode your computer is in it would be best to ask someone that does know.

Rather than reading below you can watch this video that show it all: https://youtu.be/HnQo0OCJ-48

An icon is a small picture that could appear somewhere on your screen. Sometimes putting the mouse pointer over an icon will cause some text to appear describing what the icon represents. Sometimes clicking an icon will cause something to happen. Sometimes it is necessary to double click on an icon for this to happen. eg. on desktop icons. See below for Desktop.

The main item you see, looks like this, but because it can have any picture on it or be any colour yours may look different to this

The bar at the bottom of the screen that looks like this, Again yours will look different because you will have it set up differently to this.

Read further down for an explanation of various parts of the Task Bar

The Start Button Icon. Clicking on this will call up the start menu, See later about the Start Menu

Clicking on this and then typing in something and the pressing the Enter key will cause Windows to optionally search your computer and the internet for information on what you typed

The Task View Icon. It can be used to show which programs or Apps you have operating and also to operate, start and stop using multiple desktops. Programs and App are the items you use to achieve something on your computer

Tasks on the Task bar. Tasks are yet another name for Programs or Apps. The Tasks that are underlined are current operating tasks. The Tasks that are not underlined are tasks that have been Pined to the task bar but are not currently operating. Pined means that someone has gone through a process such that the icon associated with that program constantly appears on the task bar. Clicking on a underlined icon on the task bar will cause it to become the active program, ie appear on the screen. Doing so is called swapping tasks or programs. Clicking on a non underlined task on the task bar will cause that program to start and be the active program. Right clicking on a underlined (currently operating) icon on the task bar and them clicking on close Window will stop the program. That is make it non longer be operating. If it was pined to the task bar it will still appear but no longer be underlined. It if was not pined to the task bar its icon will disappear.

The area to the right side of the Task bar is called the systems tray. Other than showing the current date and time it also shows and allows access to some of the more deeper things that the computer does.

This is what appears when you click on the Start Icon on the Task Bar. As the Start Menu is very configurable (able to be changes to suit your requirements) it is very unlikely that the one on your computer will look like this one:

Here is a video that show how to use the Windows 10 Start menu plus more:

https://www.youtube.com/watch?v=FZqKyhfD7-E