Readers who sign up will receive a 15-day free trial of the online classes, which are adapted to a student’s specific needsReaders who sign up before the end of the year will receive a 21-day free trial. David Molina Grande (Getty Images/iStockphoto)EL PAÍS has partnered with language-learning company Gymglish to offer online personalized lessons in Spanish. Readers who sign up before the end of the year will receive a 15-day free trial, with no further commitment required. This information will then be used to adapt the Spanish lessons to their needs, abilities and goals. Gymglish uses AI software to then customize the next daily lesson.