As a hobby I study Russian and Spanish. I would like to study more aggressively and I´m curious about anyone´s suggestions for attacking two languages at once. I recall that when I was studying Spanish in Colombia I would often conjer up Russian words (my first passion) when I was trying to remember a Spanish word. Therefore I attempted to make myself forget all Russian (not literally) and avoid the subject so my mind could be clear for Spanish.

Now I´m back in the U.S. and would like to retain and learn more words in both languages. I was thinking I could alternate by weeks, switching my focus each week. I also have an idea to make flash cards with both Russian and Spanish, in which case I would certainly be learning the two at the same time.

What do you folks think? Perhaps I shoud first become fluent in Russian and then move to Spanish after a few years? Or is it possible to learn both at once, and how should I do it?