The best thing about this product it its ease to use because you can start writing codes with no prior knowledge or experience! I dislike that some aspects are not very easy at first sight but once getting used they're ok (I think).
Sometimes when we run our code there's an error which causes us troubles so having good tutorials would be great if available online from their website as well :) We have been solving problems related mostly web application testing using different types like functional regression type things where sometimes bugs happen due too many changes made by other people who do development work without any clear definition etc..