docs: improve doucmentation

improve doucmentation and fix small store changes

docs-site/docs/user-guide/first-steps.md

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+---
+sidebar_position: 1
+---
+
+# First Steps
+
+MetoYou is a chat app for servers, text conversations, direct messages, and live voice. You do not need to understand the technical parts to use it.
+
+## Main Words
+
+| Word | Meaning |
+| --- | --- |
+| Server | A shared space for a community, team, or group. |
+| Text channel | A named chat room inside a server. Messages stay in that channel. |
+| Voice channel | A named live room inside a server. Join it when you want to talk, share camera, or share screen. |
+| Direct message | A private conversation outside a server channel. |
+| Plugin | An add-on that can add buttons, panels, tools, integrations, or server-specific features. |
+
+## Sign In
+
+1. Open MetoYou.
+2. Sign in with your username and password.
+3. If you use more than one signaling server, choose the server endpoint that owns your account.
+
+A signaling server handles accounts, server discovery, membership, and connection setup. In normal use you can think of it as the place MetoYou checks when you log in and join servers.
+
+## Find a Server
+
+1. Open the server search page.
+2. Search by server name or browse the available list.
+3. Select a server.
+4. Join directly if it is public, enter the password if it is protected, or use an invite link if someone sent you one.
+
+After joining, the server appears in the vertical server rail on the left. Click a server icon there to switch servers.
+
+## Read and Send Messages
+
+1. Click a server in the left rail.
+2. Pick a text channel under **Text Channels**.
+3. Type in the composer at the bottom of the chat.
+4. Press Enter or use the send button.
+
+Text channels keep different topics separate. For example, a server might have `general`, `announcements`, and `support` as separate text channels.
+
+## Start Talking
+
+1. Open a server.
+2. Pick a voice channel under **Voice Channels**.
+3. Click the voice channel to join.
+4. Use the voice controls to mute, deafen, start camera, share screen, or leave.
+
+Voice is live. Text messages are written chat. They can happen at the same time, but they are different channel types.
+
+## Use Direct Messages
+
+Direct messages are one-to-one conversations. They are separate from server text channels, so they do not depend on which server you are viewing.
+
+## Open Settings
+
+Settings contain account, voice, plugin, server, desktop, update, local API, theme, and data controls. Desktop users can also manage local data import/export and local documentation/API hosting.
+
+## Install Plugins
+
+Plugins are installed from the Plugin Store or Plugin Manager. Some plugins are global client plugins. Other plugins are server-scoped and only apply to a specific server.
+
+See [Plugins for Users](./plugins.md) for the full non-technical plugin guide.