Summary: As I take a few minutes to get away from this software I'd figure I'd give it a solid four. . . Even a moderate user like me can quickly adapt to many of the features of this popular spreadsheet program.
Summary: As much as I dislike Microsoft, I do like Excel. It is very intuitive and does the job. One neat feature is to be able to copy any data table from anywhere and paste into a spreadsheet. Then you can manipulate, add, average out etc. any data in the table and also have instant charts if you want.
Summary: If you don't have this skill, you must take a course in it especially if you are seeking some kind of office related job. Being in the recruiting business, I find that almost 95% of my clients will not even look at someone that doesn't know how to use this feature proficiently.