update self-hosting document

docs/SELFHOSTING.md

@@ -1,23 +1,32 @@
 # How to run your own ngrokd server
 
-Running your own ngrok server is really easy.
+Running your own ngrok server is really easy! The instructions below will guide you along your way!
 
-## Compile it
+## 1. Get an SSL certificate
+ngrok provides secure tunnels via TLS, so you'll need an SSL certificate. Assuming you want to create
+tunnels on *.example.com, buy a wildcard SSL certificate for *.example.com.
+
+## 2. Modify your DNS
+You need to use the DNS management tools given to you by your provider to create an A
+record which points *.example.com to the IP address of the server where you will run ngrokd.
+
+## 3. Compile it
 You can compile an ngrokd server with the following command:
 
 	make release-server
 
-## Run the server
-You'll run the server with the following command. There's more information on the
+Make sure you compile it with the GOOS/GOARCH environment variables set to the platform of
+your target server. Then copy the binary over to your server.
+
+## 4. Run the server
+You'll run the server with the following command.
 
 
 	./ngrokd -tlsKey="/path/to/tls.key" -tlsCert="/path/to/tls.crt" -domain="example.com"
 
 ### Specifying your TLS certificate and key
-ngrok only makes TLS-encrypted connections. To run your own ngrokd server, you'll need your own
-TLS certificates for your domain. You need a *wild card* certificate for *.example.com.
-When you run ngrokd, you'll need to instruct it where to find your TLS certificate and private
-key. Specify the paths with the following switches:
+ngrok only makes TLS-encrypted connections. When you run ngrokd, you'll need to instruct it
+where to find your TLS certificate and private key. Specify the paths with the following switches:
 
 	-tlsKey="/path/to/tls.key" -tlsCert="/path/to/tls.crt"
 
@@ -27,11 +36,7 @@ knows what URLs to issue to clients.
 
 	-domain="example.com"
 
-### Modifying your DNS
-You need to use the DNS management tools given to you by your provider to create an A
-record which points *.example.com to the IP address of the server running ngrokd.
-
-## Connect with a client
+## 5. Configure the client
 In order to connect with a client, you'll need to set two options in ngrok's configuration file.
 The ngrok configuration file is a simple YAML file that is read from ~/.ngrok by default. You may specify
 a custom configuration file path with the -config switch. Your config file must contain the following two
@@ -40,6 +45,18 @@ options.
 	server_addr: example.com:4443
 	trust_host_root_certs: true
 
+Subsitute the address of your ngrokd server for "example.com:4443". The "trust_host_root_certs" parameter instructs
+ngrok to trust the root certificates on your computer when establishing TLS connections to the server. By default, ngrok
+only trusts the root certificate for ngrok.com.
+
+## 6. Connect with a client
 Then, just run ngrok as usual to connect securely to your own ngrokd server!
 
 	ngrok 80
+
+#### Do I really need a wildcard certificate?
+If you don't need to run https tunnels or you can add your own root certificates then you don't need one.
+
+#### I don't want to pay for an SSL certificate, can I use a self-signed one?
+Yes, it's possible to use a self-signed certificate, but you'll need to recompile ngrok with your signing CA.
+