Add more information to website.

Changes to be committed:
	modified:   website/docs/tutorial/index.mdx
	modified:   website/versioned_docs/version-0.20/getting-started/build-a-sample-app.mdx
	modified:   website/versioned_docs/version-0.20/tutorial/index.mdx

website/docs/tutorial/index.mdx

@@ -117,12 +117,24 @@ Now, let's create an `index.html` at the root of the project.
 Run the following command to build and serve the application locally.
 
 ```bash
-trunk serve --open
+trunk serve --open // remove option '--open' to not open your default browser
 ```
 
 Trunk will open your application in your default browser, watch the project directory and helpfully rebuild your
-application if you modify any source files. If you are curious, you can run `trunk help` and `trunk help <subcommand>`
-for more details on what is happening.
+application if you modify any source files.
+This will fail if the socket is being used by another application.
+By default server will listening at address '127.0.0.1' and port '8080' [localhost:8080](http://127.0.0.1:8080).
+To change it, create the following file and edit as needed:
+
+```toml title="Trunk.toml"
+[serve]
+# The address to serve on.
+address = "127.0.0.1" // "0.0.0.0" for WAN
+# The port to serve on.
+port = 8000
+```
+
+If you are curious, you can run `trunk help` and `trunk help <subcommand>` for more details on what is happening.
 
 ### Congratulations
 

website/versioned_docs/version-0.20/getting-started/build-a-sample-app.mdx

@@ -46,7 +46,7 @@ To convert this simple command line application to a basic Yew web application,
 
 #### Update Cargo.toml
 
-Add `yew` to the list of dependencies.
+Add `yew` to the list of dependencies editing file:
 
 ```toml title=Cargo.toml
 [package]
@@ -58,6 +58,8 @@ edition = "2021"
 yew = { version = "0.20.0", features = ["csr"] }
 ```
 
+or using `cargo add yew -F csr`.
+
 :::info
 
 You only need feature `csr` if you are building an application.
@@ -128,10 +130,21 @@ Finally, add an `index.html` file in the root directory of your app.
 Run the following command to build and serve the application locally.
 
 ```bash
-trunk serve
+trunk serve // add option '--open' to open your default browser
 ```
 
 Trunk will rebuild your application if you modify any of its source code files.
+This will fail if the socket is being used by another application.
+By default server will listening at address '127.0.0.1' and port '8080' [localhost:8080](http://127.0.0.1:8080).
+To change it, create the following file and edit as needed:
+
+```toml title="Trunk.toml"
+[serve]
+# The address to serve on.
+address = "127.0.0.1" // "0.0.0.0" for WAN
+# The port to serve on.
+port = 8000
+```
 
 ## Congratulations
 

website/versioned_docs/version-0.20/tutorial/index.mdx

@@ -117,12 +117,24 @@ Now, let's create an `index.html` at the root of the project.
 Run the following command to build and serve the application locally.
 
 ```bash
-trunk serve --open
+trunk serve --open // remove option '--open' to not open your default browser
 ```
 
 Trunk will open your application in your default browser, watch the project directory and helpfully rebuild your
-application if you modify any source files. If you are curious, you can run `trunk help` and `trunk help <subcommand>`
-for more details on what's happening.
+application if you modify any source files.
+This will fail if the socket is being used by another application.
+By default server will listening at address '127.0.0.1' and port '8080' [localhost:8080](http://127.0.0.1:8080).
+To change it, create the following file and edit as needed:
+
+```toml title="Trunk.toml"
+[serve]
+# The address to serve on.
+address = "127.0.0.1" // "0.0.0.0" for WAN
+# The port to serve on.
+port = 8000
+```
+
+If you are curious, you can run `trunk help` and `trunk help <subcommand>` for more details on what's happening.
 
 ### Congratulations