Keep calm. The best way to approach this topic is to break it up into smaller chunks. Before starting, read the Chapter Home page first in order to get a broad overview of the approach in this chapter.
To start, we can classify the UG system into THREE main anatomical sections and within each section organise the conditions into main disease categories, so you don't lose track of the big picture.
Anatomical subdivision: There are THREE natural divisions in the urogenital tract:
Note: You will see the term "renal failure" a lot in this blog. After you finish going through this, refer to your lecture notes for the causes of Acute and Chronic Renal Failure (Lecture III) and try to CLASSIFY them according to what you have learned here (eg. glomerular vs tubulointerstitial vs lower urinary tract), so they are easier to remember.