Canispater Christmas:
A great vlog by Jeff Lacey. He also has a complete start-to-finish Udemy course available.  A great place to start learning about this amazing hobby.

Learn Christmas Lighting:
David Henry is a stage lighting specialist who also has a passion for Holiday lighting. He has some great instructional videos on YouTube as well as the LCL Academy.

xLights is a free and open source program that enables you to design, create and play amazing lighting displays through the use of DMX controllers, E1.31 Ethernet controllers and more.

AusChristmasLighting 101:
Hands down, the best introductory manual on this hobby. The download is free, but you must register to receive it.

RGB Pixel Light Power Calculator:
John Spiker's online power calculator. An absolute MUST in this hobby! 

Don't feel like pushing your own pixels? Let Kyle Campbell help you out! He provides ready-to-run props, filled with RGB2Go pixels!