GITBOOK-154: No subject

Author: Joanna-Session

contribute-to-the-session-network/running-a-session-node/README.md

@@ -10,6 +10,8 @@ description: >-
 
 You can run Session Node software on any device running a supported operating system, but for the purposes of this guide, we'll assume you will be setting up a Session Node on a remote Ubuntu or Debian server. If you're new to Linux or running servers in general, this is the most straightforward approach. If you're more experienced and would prefer to run your Session Node on a different operating system, you'll need to modify the syntax of some commands to suit your system of choice.
 
+> **Note:** You'll need Session Tokens (SESH) on the **Arbitrum One network** to be able to stake. If you have purchased SESH on the Ethereum Network, you must bridge it to the Arbitrum One network via the [official Arbitrum bridge](https://stake.getsession.org/bridge/arbitrum) first. Please also make sure you have a small amount of ETH on the Arbitrum One network for gas. 
+
 #### **Requirements**
 
 These are the current basic requirements for running a Session Node.

contribute-to-the-session-network/staking-to-a-session-node.md

@@ -8,6 +8,8 @@ Session Nodes can be run by a single contributor, or by multiple contributors wh
 
 If you wish instead to register a node, you can find out how to do that [here](running-a-session-node/).
 
+> **Note:** You'll need Session Tokens (SESH) on the **Arbitrum One network** to be able to stake. If you have purchased SESH on the Ethereum Network, you must bridge it to the Arbitrum One network via the [official Arbitrum bridge](https://stake.getsession.org/bridge/arbitrum) first. Please also make sure you have a small amount of ETH on the Arbitrum One network for gas. 
+
 #### Step 1:
 
 Navigate to the [Staking Portal](https://stake.getsession.org/) and connect your wallet. If you wish to stake your vesting SESH tokens, please ensure that Vesting Mode is **switched on.**