List of interesting topics for further reading

I intend to update this list from time-to-time once i bump into anything that interest me but i don't have time to go in depth into it for that particular time, so just make it as a mental note for me to learn it later or visit the site in the future.

1. what is drupal_get_form()? i have debugged the error but still have no clue how does the thing work - http://mukastone.blogspot.com/2012/04/trouble-shoot-drupal-menu-module.html
   
2. Devel installation and how to use. To find 2 other modules that are good practice during debugging
   
3. the concept of 'block module' and 'node module'
   
   
   
4. There are currently 8 block-related hook functions.
   
   
   
5. (Solved) What the fuck checking is this???? couldn't see any at module pane!
   
   Of course laa.. kalau engko tak wat lagi module, misti la x nampak dalam module niiih! aparaa..