for cleaning the glass, i recommend you stick to the worst areas only until you get a handle on cleaning without dropping or knocking things over. these videos will no doubt help with that. on others, like personal income, you will see both the year-over-year and month-over-month values. they may be negative and positive as well but they are what they are, and if a person wants to go forward to carry on the relationship, it is supposed to bear these types of ups and downs. note: session times and content subject to change. 