One year on Duo, yay me!
Along this year I found that Duo is:
exceedingly good at refreshing older knowledge, like my once very good but for years neglected French, and my completely forgotten Latin I hadn't touched since Uni;
very good at helping me navigate languages with a similar structure to my own native Portuguese (Spanish and Italian classes are a breeze);
not very efficient at a really from scratch language and alphabet (Hebrew remains an elusive dream). Of course, it's possible that a completely new language just requires more effort... I'll be looking into it, and adding other resources.
Here's to another year, more languages and, hopefully, a breakthrough in Hebrew!
Finally, a huge thank you to everyone that has been working to give us this home after Duo closed the Forum!