[Kaperstone]

You can find many tutorials that teach you how to create one the tutorials board
http://forum.sa-mp.com/forumdisplay.php?f=70

Some tutorials based on different ways you can store user data
y_ini
https://sampforum.blast.hk/showthread.php?tid=273088
MySQL
https://sampforum.blast.hk/showthread.php?tid=574714