Gringo in Monterrey Mexico
I recently moved to Monterrey and I have tried three different coarses and have two books. I also meet with a Spanish teacher twice a week. I really love Doulingo it is a tremendous Blessing. The hardest thing for me is retaining what I have learned so I can use it.
Investigate! All the cool kids are doing it. Keep it mind DuoLingo also utilizes SRS method but with a software like Anki you can input a long list of words, sentences, images, sounds that you would like to remember.