Do two or three things at once!
You can see the Amazon, help the pueblo, and practice your Spanish. The kids speak a very basic, limited form of Spanish. It seems to have some elements of Portuguese and their traditional native, Yagua language. Most of the adults speak Colombian Spanish, learned in school or from the time they have spent working in the larger cities of Colombia. Some of the older people speaking nothing but Yagua.
My Spanish is by no means perfect, but I now have little problems communicating with almost anyone in Spanish. As most in the village use a simplified Spanish, some things are easier for me to understand.
The village gives me a low pressure environment to practice Spanish and increase my vocabulary. All people in the village have been very patient with my efforts.