Not sure about a pen pal but a guy at work can surprisingly function in Kreyol after buying books and Audio of Haitian Kreyol online.
Also If you study french at the same time you study Kreyol it might make both of them easier. Plus you could be killing 2 birds with one stone.
Some Kreyol words and English derived, here's one funny english-derived word:
mayas: means stinky feet in kreyol
To get the origin of this word add another "s" and put a space between the "my" to the other word.
Have fun learning Kreyol!