So you are not agreeing with the consensus that has been reached on the civ IV strategy and tips forum after many years of heavy play and analysis of the game. Interesting. In most situations early on you want to produce workers and settlers before writing and once writing is in whip a few libraries to get that science/GPP going which really helps at this stage of the game. Of course if rushing a close neighbour than build only units first and then once the rush is complete these things can be focused on. When someone is new to the game what they want to hear is general, fundamental concepts which they can work with to better their understanding of the game. The importance of building lots of workers in the early stage of the game in order to improve all the land as quickly as possible is one. Another is getting libraries very fast to help with early research via the running of scientists. No one is saying that every single game should go like this, there are of course situations where it is better to forgo these things but they are in the minority. Regardless, anyone trying to learn Civ IV would do very well heeding this advice.