I did mine in November after years of prevaricating. I took it assessment-only and managed a pass. Read the materials thoroughly, bone up on your species ID (I mean, thoroughly!), and you should be absolutely fine
At least this is likely to be a book you will be interested in studying. There is some great info in it and I would imagine that most people who have done the DSC1 it found the manual very useful afterwards. I know that for my self I found it one of the most informative books/manuals on deer stalking that there is.
im doing mine at the end of the month
ive done all my training on www.dsctraining.org/ its a hard way to learn as you dont do any reading or get any instruction but somehow the knowledge seems to going in