Can I track retroactively? Should I track back to the beginning of the year?

We suggest tracking for 4 weeks to help you get information about a month of spending.  You can start from today, go back to the beginning of this month, OR track back 4 weeks from now.  Whatever feels easiest to you, do that.  You do not need to track back to the beginning of the year.  Having one month of data is enough to move forward with the course.