Duon Martin,
I haven't followed Agile practice guide. but I have played role of Scrum Master and  experience with Scrum of scrums process as part of my work so that really helped me in this context.
1.  PMBOK reading gives to high level understanding of concepts.
2. practice as  many short  timed quizzes as possible  this helps not only time management  but also thorough understanding of concepts.  Give second time reading of PMbok or any source that you are following
3.  I will not panic even if I score less than 60%  in quizzes .  it is TOTALLY OK . Re- iterate" this is not academic exam and I will not get same questions anyway in exam.  but i will analyze , identify and improve."
4. Always review both right and wrong answers improve understanding of concept.
5. while  reading questions  keep in mind  - try to identify key words - some times might need to rephrase to get correct context.  below are few questions to keep in mind
a)  if  it is  Hybrid, predictive or Agile? -
b)  which phase? - CCB needed or not?
c)   is it a risk? - Is it known or unknown  or resolved,  Does risk response  changed scope, schedule or cost? Is it external or internal risk?
d)  Role based - what role?  what is role scope ? Can make  decisions/actions? where team located?
e)  whom we are talking to - internal or external stakeholder? is this right information ?  where they located?
f)  PM - try to resolve conflict,  if  rules are broken - action will be  taken
6) pracctice Process and ITTOs.
7)  Day before exam i will only review my notes and  donot try to learn any new stuff or do  practice exam rather i will review my previous exam questions.

   Put 200% in your effort, donot think about result,   read the lessons learned from peer only to make the strategy that best work for you and NOT to  make you  nervous.
BE RELAX,   
 BELIEVE IN YOURSELF(  If you do. so your team ),  
  ALL THE BEST!!
Thanks,
RP