Actually, some of the problem is that the last time I focused on learning sign for myself, it was pre-internet (literally, before 1990!), and there just wasn't MUCH around here other than going to churches which had an interpreter, or occasionally, a "music interpreter"-- which meant, of course, the slower, religious songs were the ones chosen to interpret.

Getting back to it after teaching SOME sign to the youngest is fun, because now I can look for the words I want to learn, rather than trying to be systematic. I found the "I need this word NOW" tag hangs on the words I've been able to retain in German, Spanish, and ASL, and after that, different words stick for different rates, depending upon how the language is structured.

Oh, and I still suck at becoming bilingual.