If you want to lay out your own PCBs, and have the bare boards manufactured, you could:
1. Use KiCAD for schematic Capture and PCB layout.
2. Order PCB from [OSHPark.com](https://OSHPark.com), and solder paste stencils from [OSHStencils.com](https://OSHStencils.com). (Stencils for surface mount components) OSHPark accepts KiCAD files.
>NOTE: Once you finish placing your order with OSHPark, the OSHStencils option will become available, provided you included the solder paste layer(s) with your gerber/KiCAD files upload.
3. Find components using [Octopart.com](https://Octopart.com). Octopart has an amazing BOM (Bill of Materials) feature that makes putting together an order for PCB components a breeze.