How to line a blanket?

I finished knitting a blanket pattern that doesn’t call for a lining, but I’d like to add one. The thing is, I have no clue how to do it. Can anyone provide some pointers or direct me to a website or book with good instructions? Much, much appreciated!

http://knitty.com/ISSUEsummer05/PATTwildstripes.html

This describes one way you can do it.

Thanks…I saw this website too but I’m not sure if it’s detailed enough for newbie me. I have 0 clue about sewing