Everything you need to know about ledstrips

An LED is the acronym for Light Emitting Diode. Unlike a regular incandescent light bulb, there is no filament that produces the light. Almost all of the electricity is used for making light, which makes the LED more efficient.  On the other hand, think of an incandescent light as a heater that happens to emit light as well. Incandescents and fluorescents emit light with very high beam angles. Since LEDs are small and powerful with a definite beam angle, it is important when using them to have them arranged in a way that the emitted light is even upon the surface you desire to light. 

LED strip lights are new and versatile forms of lighting. There are many variants and exceptions, but for the most part, they have the following characteristics:

• Consist of many individual LED emitters mounted on a narrow, flexible circuitboard.
• Operate on low-voltage DC power
• Are available in a wide range of fixed and variable color and brightness
• Bought in a long reel (typically 5 meters), can be cut to length, can include double-sided adhesive for mounting
  
• LEDstrips can be tints of 'white' , RGB(W), various colors controlled with an app/remote or even (individually) addressable & controlled by software.

Educate yourself before buying the wrong strip:

Some in depth https://www.waveformlighting.com/led-strip-lights