# Books
Books are the foundation of RelayBook. A **Book** is a shared collection of contacts — like a folder that your whole team can access together.
> [!quote] Organize with Purpose
> Every relationship belongs somewhere. Books give your contacts a ==home== that your whole team can find and use.
## What is a Book?
A Book is a named collection of contacts with:
- A **name** that describes its purpose
- A **color** for quick visual identification
- An **icon** for personality
- **Members** with defined roles (Owner, Member, Viewer)
- Its own set of **labels** for categorization
> [!highlight] Examples
> - "Sales Leads" — prospects your sales team is tracking
> - "Vendors" — suppliers and service providers
> - "Event Speakers" — contacts for an upcoming conference
> - "Personal Contacts" — your private address book
## Creating a Book
1. Click the **+** button in the book rail (left sidebar)
2. Enter a **name** for your book
3. Choose a **color** and **icon**
4. Click **Create**
Your new book appears in the sidebar, ready for contacts.
> [!tip] Your first book
> When you sign up, RelayBook automatically creates a personal book for you (e.g., "John's Contacts"). You can rename it, customize it, or create additional books anytime.
## Customizing a Book
Book owners can customize:
- **Name** → rename to reflect its purpose
- **Color** → choose a hex color for the sidebar and UI
- **Icon** → select an emoji or custom icon
These visual cues make it easy to switch between books at a glance.
## Book Rail
The **Book Rail** is the vertical sidebar on the left side of the app. It shows all books you have access to.
- Click a book to switch to it
- Each book shows its color and icon
- Use keyboard shortcuts `Cmd/Ctrl + 1–9` to quickly switch between books
## Deleting a Book
> [!note] Owner-only action
> Only the book **Owner** can delete a book, and only if they are the **sole owner**. This prevents accidental deletion of shared resources.
Deleting a book removes all contacts and labels within it. This action cannot be undone.
## Why Books Matter
- **Separation** → keep different contact groups distinct and focused
- **Collaboration** → share the right contacts with the right people
- **Organization** → each book has its own labels, members, and structure
- **Access control** → roles define who can view, edit, or manage
> [!success] The Key Idea
> Books are your organizational units. Create one for each distinct group of contacts, invite the right team members, and let everyone work from the same source of truth.
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**Next:** Understand who can do what with [[Roles & Permissions]].