Did you ever come across a long and/or complex terminal command? And you wished you knew what you are doing instead of a simple copy paste?
explainshell.com is a fantastic site that breaks down those complex commands and options for you!
For instance, this is what explainshell will tell you about my command to find and delete those conflicted dropbox files:
http://www.explainshell.com/explain?cmd=find+.+-type+f+-name+%22*confli*%22+-exec+rm+-i+-f+{}+\%3B