Hello,
okey so I wanted to ask what should I practice before taking exam? ( I have 29 days left to exam)...
I will tell how I went about labs so maybe that will make more preciese answers from users here 

So I managed to break into(got root) almost all pc`s in labs except admin network because my lab time finished( 60 days in general ). I only used metasploit for breaking into 7-9 machines, rest was done manually - I mean looking for exploits on web, rewriting stuff etc.  Before taking course I had no previous certifications etc.
I know about shellcode handbook (all people say that this is useful ) but I read it and it wasnt useful at all on labs and no python books because Im already more than average on programming in python.
ps. Sorry if some stuff/parts above may seem arrogant 

ps2. I read all kinds of reviews but nothing specific was there to help me out.