Well, I'm studying it ^^ Though, it's hard to remember the older ones I learned long ago, lol. Let's say I've actually learnt ~400, but maybe I can only recall 200-300... >.<
Ohh, you're using Minna no Nihongo too? Nice! Are you only using the grammar book, though? It should come in one set composed of a grammar book, a reading materials book, a kanji book, a grammar guide and explanations book, and finally an exercise questions book. The kanji book is good imo, provided that you practise regularly :p
Haha, good luck, I don't know what keyword I should use lol