I love the ease of use of this program. You don't need any special training to use it - and it is very user friendly. It is also very fast. For example, when I was running some basic calculations (which could be performed with Excel) it took about 10 seconds to run them. I also found that it did a lot of things "for free" that I had never seen before. For example, if I added a new column it would calculate the sum of every cell in that column automatically. This feature saved me hours of work. However, sometimes it would show me the wrong answer. If this happens to you, make sure you go into the help section and read the instructions carefully. In my case, I made a mistake when entering a formula. It asked me to type something like "=C1+D1". When I typed it, it actually meant "=C1+C2". After making this change, the problem went away. But another thing happened: The program no longer recognized my keyboard layout. Every time I typed something it would say "this key does not exist on this keyboard". Of course, I realized that it was asking me to press Alt Gr + C which is not what I want to do.