Trying to connect Hitachi HD44780 to Arduino Mega

Using Arduino Project Guidance
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Forgive me if the answer to this is blindingly obvious but I seem to be stuck on what must be virtually lesson one.

I have constructed a few Arduino circuits (leds, potentionmeter, temp and humidity sensor) so I have a grasp of the basics.

I am trying now to connect a LCD display of 16 characters by two lines.
The file included with the Arduino software in the example folder seems short of a bit of information.

It gives details of connections for pins RS, E, D4, D5, D6, D7 and R/W but then says

10K resistor without saying where or to what is is connected

"ends to +5v and ground". What does "ends" mean? Is that the VSS pin at one end and the K pin at the other and if so which end gets the +5v?

It also says "wiper to pin V0". I guess that means I need to include a pot in the circuit somewhere. Is that to control brightness of the display?

I clearly need to learn about libraries if I am to progress. Can anyone recommend a book that will give me an insight into them?

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Need more information on what you are looking at.
See these typical images for wiring the 10K pot (variable resistor)

843×748 16.3 KB

1845×1020 152 KB

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Review this:
https://learn.sparkfun.com/tutorials/how-to-read-a-schematic

485×600 141 KB

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Thanks for responding with the diagram

In the Arduino IDE I went to File/Examples/LiquidCrystal/Display and there it has the info I referred to in the original post.

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