I was a novice to stalking, I'd been out a few times and was constantly learning as I went but the DSC 1 made me sit up and realise I had far more to learn. Recognition, deer diseases and parasites were the harder areas for me, particularly recognising deer from different angles.
The manual was very comprehensive but I also read articles in other publication and on the web. There are some good images there. I enjoyed using the old grey matter after many years too.
I treat passing the DSC1 like passing the driving test; the real learning is just beginning. I don't think I've been out and not learned something new.