I like the CCNA program for most techs in infastructure support/engineering spots who have a foundation of experience in other technology areas. I would probably suggest CompTIA's Network+ learning track as a better way to get your feet wet with basic networking "from scratch" and fluff your resume a bit if you decide to certify.
If you're looking to just buff up your own knowledge of networking for recreational use I'd spend some serious google time... perhaps hitting on the following terms most pertinent to home use or just "good to know" topics (NOT exhaustive, just some top of the head concepts that I know are covered extensively via Wikipedia and various enthusiast sites at a beginner level):
Network Cable Infastructure (CAT5, 5e, 6, etc..)
How to use a punchdown tool and keystone jacks
www.deepsurplus.com <just to see/price some of the bits and pieces>
Gigabit ethernet (jumbo frames)
Wireless Security (WPA, WPA2, Radius, Mac Address filtering)
802.11 b / a / g / n
Wireless performance issues (interference, channel affinity, etc..)
QoS
Whitelist/Blacklist
NAT routing
SPI
How to subnet an IP network (big topic)
IPV4 / IPV6
OSI model
DHCP
DNS