posted by in Costa Rica forum
I just read your message...we have a newspaper in english called the Tico Times, this is their link:
maybe you can post an ad there or just look what they offer...
this is a link for volunteer work (even though the default page is in Spanish, you can change it to English)
another NGO... http://anaicr.wordpress.com/
and there's this other page you might find helpful as well...
I hope this will be a good way to get started!