Yea, it is much easier to absorb a language at younger age. I remember learning russian in school when I just started it at the age of 7, it took me 3 years to learn the basics, but after that I never really put much effort in improving it, simply because it was always there for me, part of that played the environment, you could hear russian anywhere in Armenia as it was heavily influenced by it's Soviet heritage.
On the other hand I started learning English at the age of 16-17, it only took to learn the grammar and after that I just built on it by forums, movies and so on.
Armenian on the other hand, is a whole another story, it does not belong to any of the linguistic groups, as it's a language of it's own with words that have no similarities to other languages, but it's grammar is not complicated, it only takes to get used to the sounds, we have many of them, which make the language very fluent, I am in Bulgaria now, but my name hasn't been pronounced correctly from the first time yet. Btw, Bulgarian is an easy language to learn, once you get used to any of the slavonic languages, it doesn't take much to learn the others, I can understand serbian, macedonian.
Today I am starting french, it's going to be my first lesson and I have no idea what to expect, but I have the will to learn it, so let's see what happens ^^