No problem. You can find a lot of the info online, then just pick up a cheap old 2600 series router and a switch (3500 series will be a couple of quid) from ebay for a home lab and get learning to cover the basics. Cisco provide guides on how to pretty much configure all the stuff, you just have to get your head around the terminology and what you want to achieve. The courses them selves will be of benefit on a cv, the exam cert a much better benefit, and of course real world exp miles better.