Learn everything you want to know about felting by clicking on this Felting 101 link. It will take you to a tutorial on my retail website, Pick Up Sticks.
If you are wondering if you can felt in a top loader, you can. But I would not felt anything that needs to be accurately sized in a top-loader. You have to be able to stop the machine mid-cycle and pull out your knitting to see how it is progressing and most top-loaders will not let you do that.
We also have two short videos on felting, here:
Washing Machine Felting:
Hand Felting:
