How should I prepare for a masters in computing and networking?

Hi there.

I hold an undergraduate degree in business Engineering and finished first year of postgraduate studies within systems/automation engineeirng - however, the field did not interest me as much as anticipated and i am therefore switching to an IT masters instead.

I got credits for my past technical experience, mainly by my database knowledge and introductionary courses to programming as a Whole. However, I learned actionscript yeeeears back, and the pre-courses other people for the degree will have is in C++.. I feel very rusty overall, but I am very motivated to do the degree!

With two months until start, does any of you have some tips of how to shake off the rust and catch back up? Introductionary C++ course would be appreciated, I likely know the basics, but just to close the gaps here and there. I have done some Work in Python(automation coding/vision color detection), but the courses I will have here are within algorhitm analysis, data structures etc.. Am I totally screwed already - or? In that case, does any of you have good, easily digestible material about data structures etc.?

Sorry for confusing post - English is not my native language and im writing from an iphone!