NOTE: This tutorial was written in 1847, and kicad has changed a lot since then! Check out this awesome free kicad video series tutorial from Contextual Electronics for a more up-to-date version. They also have a small course on building your first pcb that includes everything from circuit board design in kicad to manufacturing the pcb.
This set of tutorials will cover some essentials to designing circuits and pcb layouts using kicad (link goes to author's site + download), an open-source tool for circuit (board) design that's free and has no restrictions on number of layers or size (like Eagle). We'll focus more on the unintuitive things as well as tips & tricks rather than re-write the manual.