If you need help with Wireshark, here are some people and places which will prove invaluable.
Home page: http://www.wireshark.org/
Manual and documentation: http://www.wireshark.org/docs/
Source code :http://anonsvn.wireshark.org/viewvc/
How to Use Wireshark to Capture, Filter, and Inspect Packets: http://www.howtogeek.com/104278/how-to-use-wireshark-to-capture-filter-and-inspect-packets/
5 Killer Tricks to Get the Most Out of Wireshark: http://www.howtogeek.com/106191/5-killer-tricks-to-get-the-most-out-of-wireshark/
Network Analysis with Wireshark On Ubuntu 9.10: http://www.howtoforge.com/network-analysis-with-wireshark-on-ubuntu-9.10
Packet Sniffin' Tips and Tricks that I wished I would have known earlier in my career...: https://learningnetwork.cisco.com/blogs/network-sheriff/2008/08/25/packet-sniffin-tips-and-tricks-that-i-wished-i-would-have-known-earlier-in-my-career
Official mailing list: https://www.wireshark.org/mailman/listinfo/wireshark-dev
Unofficial forums: http://www.techsupportforum.com/forums/f139/ethereal-wireshark-131427.html
Official IRC channel: irc://irc.freenode.net/wireshark
User FAQ: http://www.wireshark.org/faq.html
Wireshark official blog: http://blog.wireshark.com/
The Cisco blog is a very useful source for getting the latest information on network sniffing: https://learningnetwork.cisco.com/
The tech republic blog is also an important source to learn about Wireshark: http://www.techrepublic.com/blog/opensource/
Riverbed Technology: https://twitter.com/riverbed
Abhinav Singh: https://twitter.com/abhinavbom
For more open source information, follow Packt at http://twitter.com/#!/packtopensource