Basic Guide to modification creation

[rockinaway]

Is there any basic tutorial/guide on how to create modifications for vBulletin. This involves adding new PHP code etc..

[Lynne]

There are several articles in the articles forums about writing mods/plugins. You might want to check these out:
https://vborg.vbsupport.ru/showthread.php?t=82625
https://vborg.vbsupport.ru/showthread.php?t=82923