How to Fix Custom Magento Module Not Showing Up

Well, after following these tutorials:

http://activecodeline.com/writing-a-custom-module-in-magento-detailed-walktrough/
http://www.magentocommerce.com/wiki/how-to/create-payment-method-module

I still cannot see my custom module in the system->configuration->advance menu. Fortunately, I tried clearing my cookies and removing all the folders inside var/cache and then my module is present where it should be :-).

Magento is great but it lacks solid documentations compared to the existing frameworks plus it's quite slow. But I like the way the system works MCV, spring. I think it's a mixture of several existing technologies, I just hope it will mature in the near future :-).