• Basic Config of a Netscreen Firewall: This goes through some of the most basic steps needed to get a firewall up and running.
• Debugging a flow: 

Pulse: 

• Mag2600: How to configure the mag ssl vpn concentrator 

JunOS:

• Starting off: How to virginise the box, and reset the password.
• Basic JunOS Configs: Simple steps to get the device configured properly
• VPNs: How to configure IPSec and SSL VPNs on the SRX
• Flow vs. Packet Mode: Do you want a firewall or router? 
• BGP: how to setup and confirm bgp is working

• Watching Flows: how to view flows on a SRX
• creating pcaps: How to capture traffic and offload it for post analysis
• Monitoring: Health of the firewall
• bypassing the firewall: How to set a flow to packet-mode, and bypass any firewall filtering

• SRX Troubleshooting Guide: Great resource for what steps to follow

• JunOS CLI: What's so cool about the CLI?
• JUNOS Cheat Sheet: List of commands, what they do and some examples.
• IOS to JUNOS Cheat Sheet: What to do if you know Cisco's but not Junipers...

TAC:

•  Contacting TAC (JTAC): Things to do when contacting them (how to get info from/off your box)