docs/node: Refresh Run a node

Author: amela

docs/node/README.mdx

@@ -3,15 +3,38 @@ import {findSidebarItem} from '@site/src/sidebarUtils';
 
 # Run Node
 
-The following documentation is intended to assist any individual or
-organization in participating in the Oasis network as a node operator. To join
-the network we recommend you first try running a node on the Testnet. The
-Testnet is a playground where you can learn and experiment without the risk
-of losing real tokens.
+Welcome! This documentation is designed to provide you with a comprehensive
+understanding and step-by-step guidance for becoming a node operator within the
+Oasis network.
+
+Embark on your journey by initiating a node on the Testnet. The Testnet serves
+as an experimental sandbox, offering a safe environment for learning and 
+experimentation, free from the risks associated with real token loss.
+
+For any queries or support related to node operation, our team and community
+members are readily available on [Discord] to assist you.
+
+[Discord]: https://oasis.io/discord
+
+## Validator nodes and ParaTimes
 
 [Oasis Network] consists of the consensus layer and ParaTimes. Consensus and
 ParaTime nodes can be operated by anyone.
 
+To run a **Validator node**, make sure your system meets the [Hardware] and the
+[System] prerequisites and has [Oasis Node] installed.
+
+Then proceed by following the [Run a Validator Node] guide to:
+
+* Create your entity.
+* Initialize and configure your node.
+* Put enough stake in your escrow account.
+* Register your entity on the network.
+
+To run a **ParaTime node** make sure to first set up a Validator node. Then,
+set up a [trusted execution environment (TEE)], if you want to run confidential
+ParaTimes. After that, proceed to the [Run a ParaTime node].
+
 :::info
 
 Consensus layer is a decentralised set of 120 validator nodes that are a
@@ -31,27 +54,10 @@ node operator you can participate in any number of ParaTimes.
 
 :::
 
-If you have any questions about running a node you can find us on [Discord].
-
 [Oasis Network]: ..//general/oasis-network/README.mdx
 [Oasis Scan]: https://www.oasisscan.com/validators
-[Discord]: https://oasis.io/discord
-
-## Node Roles
-
-To run a **Validator node**, make sure your system meets the [Hardware] and the
-[System] prerequisites and has [Oasis Node] installed.
-
-Then proceed by following the [Run a Validator Node] guide to:
 
-* Create your entity.
-* Initialize and configure your node.
-* Put enough stake in your escrow account.
-* Register your entity on the network.
-
-To run a **ParaTime node** make sure to first set up a Validator node. Then,
-set up a [trusted execution environment (TEE)], if you want to run confidential
-ParaTimes. After that, proceed to the [Run a ParaTime node].
+## DApp developers
 
 If you are **building a service** on top of the Oasis Network, you will simply
 want to set up your own **[Non-validator node]** and (optionally) a