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PCB design resources and symbol libraries.
More resources on PCB Design
allaboutcircuits.com
All About Circuits is an electronics education site offering tutorials, reference articles, and practical projects on circuit theory and design. It also hosts a comprehensive component library and an active forum for help and discussions.
KiCad Documentation
Official documentation for KiCad, the open-source electronics design suite, covering the project manager, schematic editor, symbol and footprint editors, PCB editor, and Gerber viewer. Includes a getting-started guide that walks from a first schematic through board layout to fabrication outputs.
Complete PCB Design Using OrCAD Capture and Layout
Newnes textbook that follows a design from schematic capture in OrCAD Capture through PCB layout, post-processing, and manufacturing files. Covers IPC, JEDEC and IEEE footprint standards, design for manufacturability, and introductory signal integrity and EMI considerations.
pcbway.com
PCBWay is a PCB fabrication and assembly service that also hosts a learning center with tutorials and guides. It covers PCB design basics, practical design tips, and manufacturing-process information for beginners.
Printed Circuit Board Designer's Reference
Introductory reference by a PCB industry designer and IPC contributor explaining how printed circuit boards are designed and manufactured. Covers fabrication processes, component packaging, trace and pad sizing calculations, and common industry standards, giving readers a working basis for layout decisions.
sparkfun.com
SparkFun is an online electronics retailer and learning resource that offers components, development boards, sensors, and kits, plus tutorials and project guides to help beginners explore and prototype basic electronics.