Yes, I read that. I understand what GND and VCC pins are, but where to I put all the others like CLK, MOSI, RES, DC and CS? I found no documentation on that. It is my first time trying SPI or I2C.
Also, I am looking for help and I have read product's page before writing here and found no guidelines.
MOSI means "Master Out, Slave In", so you have to use the 2560's MOSI pin (via level-translation - a simple voltage divider should suffice)
CLK is connected to SCK (again, via level translation).
DC is "Data/Command" and can usually be any pin (via...well, you get the idea), but you need to tell the library which.
CS is "Chip Select" and can be any pin, but tell the library.
RES is "reset" and can be any pin, tell the library.