Translation of irgendein

Last weekend some friends of mine and I took a trip to the North-West of Massachussets to see the leaves which have changed their colors. All over the world people talk about the autumn in Boston.
I slept in the jungle lodge. Dinner was really nice as there was only one restaurant were everybody gathered. My newly acquired friends invited me to join them for dinner and we had a great time.
Let me understand further: If you go through the 'vocabulary builder' in the left menu and choose new lesson it works faster than when you get there through the list of all lessons? Did I get this right?