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The VCC can connect to 5V or 3.3v.

Wiring:
GD: Ground
Vcc: Power Supply +(3.3v)
SCL: SPI Clock Input
SDA: SPI Data Input
RES: Reset
DC: Data/Command Select
Cs: SPI Chip Select
BL: Backligh Control

https://github.com/adafruit/Adafruit-ST7735-Library

Arduino Tutorial:    https://learn.adafruit.com/1-8-tft-display/breakout-wiring-and-test

Package Included:
1x LCD Module