Improvements needed to /concepts/network-setup#joining-the-network.

[johnnymatthews]

The Joining the network page is missing some crucial points, and leaves the reader with some questions regarding the whole process. Issue with this page are listed here:

Missing points

• Technical Specifications: we don't mention any hardware or software requirements for running a validator. Details like minimum RAM, CPU cores, storage space, and specific OSes.
• Staking Requirements: we mention "enough stake" as a selection criterion but don't specify the minimum amount required. It's unclear if staking involves locking tokens for a specific period.
• Selection Process: we talk about nodes being "selected" to be a validator, but the page lacks details on the selection process itself. How often does this selection happen? Is it random, or are there specific criteria used?
• Rewards and Responsibilities: There's no information on potential rewards for validators or their expected responsibilities beyond relaying and potentially signing transactions.
• Monitoring and Maintenance: The content lacks guidance on monitoring validator performance, software updates, and potential downtime penalties.
• Security Best Practices: We don't mention any security best practices for running a validator node, such as key management, network security, and system hardening.

Unanswered questions

• When will public validator applications open?
• What are the specific costs associated with running a validator node? (Hardware, software licenses, etc.)
• How are relayers and signers chosen? Are there different functionalities or selection criteria?
• What happens if a validator node goes offline for an extended period? What penalties are there for downtime?