Bulgarian

For Bulgarian I'm also using Assimil.  Again, I've got other courses that I've bought in the past but the simplicity of Assimil means that it's a lot easier to write the lessons up for learning with my spaced repetition program.

I've finished the first two lessons.  Written up and learnt.

There doesn't seem to be a huge amount of content in any one lesson but it does seem pretty useful vocab.

I wonder how many people that start an Assimil course actually finish it... (this is something to wonder about any language course of course)