Google - how can I print a power point presentation length wise ?

Every program you use has a tools menu. If you use tools a lot it will be a toolbar across the top of the screen. If you rarely use tools it might be hidden. In Windows you can click "Start" and select "Control Panel" and that gives you a menu of menus to control everything the computer does. You can right click anything and most of the time get a menu for that specific item. For example if you right click the desktop you have the option to rotate the monitor image in some graphic cards. That allows you to have an image that is high instead of wide, by turning your monitor. You don't need to memorize all these things, just be aware that they are in there. Then you can claim to know how to operate a computer at the beginner level.

In the upper left corner of the screen is a button marked "FILE". You might have to right click there to make it visible. One of the options in that menu is "PRINT" or "PAGE SETUP". If it's not there, then you can go to START in the lower left corner and select "Devices And Printers" to get to the menu. That is where you set page numbers, margins, fonts, and which way to turn the image.