Don’t have a to do list but some random notes, now turned into an incomplete index:
NethServer User Guide
0. TOC
1. Introduction
What is NethServer?
Who is it for?
Where to find documentations and support
Document Conventions
2. Planning Installation
…and document everything
2.1. Collect Information on Current Infrastructure
current infrastructure diagram; type of connections (wires/wifi specs); number of current users, offices, and expected growth; hardware (workstations, laptops, servers, printers, and other networking devices…); software (O.S., programs, used/available licenses, software constrains and possible migrations); credentials for the networking devices, domains, and other credentials required to complete the installation (and deployment); ISP settings; used IP ranges, assigned IPs, device names, shares, user permissions (access policy)…
2.2. Network Planning
2.3. Choosing a Server (and Related Hardware)
Server functions
Physical server or virtualized?
One server or multiple servers/appliances?
2.3.1. Server Location
Access restrictions (Server Room, tower-door/rack-door key…); Ventilation; Noise level…
2.3.2. Server Format
Microserver, Tower, Rack Mounted
2.3.3. Server Components
Internal components, redundant storage/power, ports…
Replacement parts availability (also price, and whether proprietary connectors are used)
Other devices (NAS, single UPS or one for each power supply…)
2.3.4. Other Considerations
Warranty; Budget…
2.4. Backup Strategy
NAS, Tape Backup, Off-site Backup, Cloud Storage, workstation’s imaging…
Backup Schedule
3. Prerequisites
3.1. Hardware
3.1.1. Minimum Hardware Requirements
3.1.2. Hardware Support
3.1.3. Hardware RAID
3.1.4. UEFI Support
3.2. Software
3.2.1. Obtaining NethServer
3.2.2. Checking the Integrity of Downloaded Media
3.2.3. Preparing Bootable Media
3.2.3.1. Making an Installation CD/DVD Media
3.2.3.2. Making an Installation USB Media
4. Installation
4.1. Booting from the Installation Media
disconnect external drives; power-on the server; insert media; set boot device priority…
4.2. The Boot Menu
4.3. Additional Boot Options
4.4. Installation Methods
4.4.1. Installing from ISO
4.4.1.1. Interactive Install
4.4.1.2. Unattended Install
4.4.1.3. Standard CentOS install
4.4.2. Installing from YUM
5. After Installation
5.1. Accessing the Server Manager Web Interface
5.2. Initial Setup
root password, server name, domain name, timezone, SSH port, phone home
5.3. Network Setup
set green/red… interfaces
5.4. DNS Service Setup
5.5. Updating the System
From Server Manager GUI, from command line (yum update, pkgaction --update \*, how to exclude…)
5.6. Configure Organization Contacts
5.7. Configure root User Profile
5.8. Configure Server Certificate
5.9. Configure SSH
5.10. Learning the Basics of the Command-Line
Change Keyboard Layout, /etc/sysconfig/keyboard, loadkeys
Install Alternative Editor (yum -y install nano)
Change Default Editor
Useful Commands; yum-cron, yum-plugins, Installing a Desktop Environment (NOT RECOMMENDED) (and additional GUI programs)…
Adding repositories
Adding support for NTFS
6. Modules (unordered list; SHOULD BE ordered correctly)
6.1. Official Modules
Languages
DNS and DHCP server
- Configure DHCP Server
Backup
Basic firewall
Intrusion Prevention System
UPS support
Print server
Fax server
Web-based fax client
File server
POP3 connector
POP3 proxy
SMTP proxy
Email
SOGo groupware
WebTop groupware
Instant messaging
SNMP server
Monitoring and inventorying
Bandwidth monitor
Statistics
Web server
MySQL server
ownCloud
Web Proxy
Web Filter
VPN - Client-to-site VPN
Virtual machines manager
6.2. Community Modules
7. Securing the System
8. Upgrading NethServer
9. Troubleshooting
10. FAQ
11. Glossary
12. Additional References
I’m a casual user limited by knowledge, so any help is welcome!
I like detailed guides explaining the how and why, but also appreciate straight to the point directions like:
- Administration → Software Center → Firewall → Web Filter → Add → Apply Changes
- Gateway → Web Content filter:
→ Antivirus → Enabled → Submit
→ Blacklists → Shalla (default) → Save and download
→ Filters → Default → Edit:
- Uncheck "Block access to web sites using ip address"
- Check "Block porn sites by regular expressions on URL"
- Check the Categories:
- Advertisments
- Gambling/Casino
- Games-online
- Porn
- Sex
- Spyware
- Tracker
-> Submit
-> General -> Enable filter -> Submit
…to have both, maybe the latter within an Examples section on each detailed guide. 
For sake of clearness (and to avoid kilometric pages), break guides into units, and units into sections.
If different guides are related I like to start with a line telling where we came from and end with a line forwarding to the next step. Some index/order in the wiki could help as well.