I completed Togaf part 2 - Certification with 100%. Below are my preparation steps
1. Read through Official part 2 guide from open group. Reading this becomes easy if you already completed reading Foundation guide.
2. Keep note of each ADM phases steps, most of the senario questions in the exam are based on what steps you do in each ADM phase.
3. Practice sample exam available at the end of book.
4. Real exam is open book, i got PDF version available on the system during exam, you can search PDF to refer steps in each phase.
All the best for exam takers.....