Power supply question.

Are there any tutorials you guys can suggest me reading or watching for connecting multiple components to an Arduino, and multiple bread boards? I want to connect a MQ-131 gas sensor(MQ-131), a temperature & humidity sensor(DHT22), and an 16x2 LCD.

I want to be able to power all of these enough, especially the MQ-131 which requires 6V to heat up, so are there any tutorials perfect for this type of circuit? Any tips you guys can give through here would also be appreciated!