Adding new hardware to a computer system is getting easier. A new standard called 'plug and play' should let you connect a new part, install the software drivers and start using it without any problems. It's difficult to hurt yourself working inside your PC, but do not open the power supply or the monitor. It could kill you. They also are very fast.
Color printers are very expensive.
Ink jet produces good quality color documents at a good price. They are slower than Laser Printers and most are 300 dpi. When problems happen. Pair work . Practice the conversation.