Well, almond paste is a paste made up of 45% almond, sugar, glucose syrup, and water.  You can find it in just about any grocery store in the baking isle. 
I personally love Odense's (a brand of almond paste) almond horns.... makes great chewy macaroon-like cookies! If you're curious about any other recipes you can try their website: www.odense.com

 

Hope this helps! :)