We took two weeks of classes and felt like our heads were exploding and have backed off a little and are trying to at least learn a new word a week. Grammar and verb tense will come in another year or two.
But something has happened during this process. We have found much more empathy for those immigrants in the US trying to learn English. We laugh and make jokes about the Mexicans who listen intently, nod their heads and enthusiastically tell you, "Si, si!"
Well, now we are those immigrants, listening intently to a conversation, trying to pick up a word or two for context, nodding our heads as we enthusiastically agree, "Si, si!"
Sigh....why didn't we learn a second language when we were young? It would have been MUCH easier.