Ok, I'm cheating today. I found this post that I loved from Infarrantly Creative. I'm sure there's lots of you out there,
like myself, that forget to clean your brushes until it's too late and you've let them dry too long :(. I have plenty of those brushes, just sitting in a bag waiting for me to clean them! Anyway, HERE is a great post on how to clean them and what to use.
*Tip: When you're done with one coat, put your paintbrush in a zip lock bag so you don't have to rinse it out before your next coat. It always takes too long for your brushes to dry and if you use them too soon they'll usually drip water into your paint.