# Guitar Wiring > A guitar-electronics component reference, circuit planning tool, and collection of practical courses. The public site contains approved component specifications and course introductions. The separate app contains the editor, personal boards and parts, full lessons, progress, and billing. Pro is single-user; a guest editor demo is available, but there is no Free subscription plan. Markdown references are generated from the same published catalog snapshot as the HTML pages. Follow category or manufacturer links to individual components. Source links are references; confirm the exact hardware revision with the manufacturer. Private parts, submissions awaiting approval, and user progress are not included. ## Start here - [Overview](): What Guitar Wiring does. - [Component catalog](): Browse all categories and manufacturers, then component specifications, terminals and sources. - [Courses](): Public course introductions and chapter outlines. - [Features](): Circuit planning, checks, and printable bench sheets. - [Pro subscription](): Included features and the link to current checkout terms. ## Optional - [Privacy & cookies](): Storage, analytics and preference controls. - [Contact](): Support availability. - [Sitemap](): Canonical HTML pages. - [Guest editor](): Interactive demo; requires JavaScript.