That was my case until I discovered that GNU tar has got a pretty decent online manual - it's way better written than the manpage. I rarely forget the options nowadays even though I dont' use tar that frequently.
As much as I also do step 4, to be honest I don't see people use man anywhere near as much as they should. Whenever faced with the question "what are the arguments for doing xyz", I immediately man it and just tell them - Practically everywhere you can execute a given command, you can also read full and comprehensive documentation, just look!