It is the custom in many Hispanic countries to have godparents (padrinos) for a First Communion. Many parishes will ask the godparents for a First Communion to take a preparation class in order to serve in this role.
The following is quoted from the Pastoral Directory on the Sacraments of Christian Initiation on First Communion which was published by the Archdiocese of Mexico:
CatechismClass.com has put together a short, convenient, online course that is meant to prepare godparents of a First Holy Communion for this honor and responsibility in light of the requirements mentioned above.
CatechismClass.com is pleased to have the support of the hierarchy of the Catholic Church and offers its programs in full conformity with the Magisterium of the Church.
Studying for your own First Holy Communion or for a different Sacrament? We have classes for all Sacramental needs. Click here and use our course selector to find the right course for you if you are preparing to personally receive a Sacrament in the Catholic Church.