I was in Finland and I hade a vocabulary in an electronic book. It s an age-old one. :-))) But year s Russian becomes better and better! That s nobody can say about my German... Vera learned it at school and I "learned" it with her...
Wow, Vera learned German! ... and you learned with her!
Now with your grandchildren you must continue to learn! :-)
As a youngster at school I learned English and French. I began Russian basic courses not until at the age. I hope that the learning in the age protects my brain a little bit against the dementia. :o)