Started out about two weeks ago with Whizlabs exam simulator, but their English phrasing and wording of questions and answers was quite confusing (read: Plain incorrect English). They're a UK company but they must have put a non-native English speaker on the SCBCD exam questions and answers.
Ordered the Enthuware SCBCD v5 exam simulator one week ago and did a daily mock- or practice exam. I was very please with Enthuware's simulator. Only yesterday found out about the Leitner study method (Spaced_repetition), but if you're sill up for the exam I suggest you try it out. I took the time to write down the explanations of the answers I got wrong and compiled me a list of notes of around 20 pages
Apart from reading Enthuware's explanations I also looked up stuff on answers I got wrong in the specifcations and Mikalai Zaikin's SCBCD 5.0 Study Guide. (Where did he find the time to compile such an extensive document full of wisdom?)
That's about it...
Good luck, if you're reading this and still up for the exam!
Johan Pelgrim, The Netherlands
SCJP 1.4, SCWCD 1.4, SCBCD 5.0