Guild experience (gexp), much like regular experience, is spent to advance guild skills. You gain guild experience by fighting and killing mobs and using various gskills.
The rate at which gexp is gained depends on several factors:
As of this writing, fighting several large opponents at once in Resheph form will optimize gexp gain.
Syntax: 'gexp mark'
Begins tracking gexp gains. Afterward, 'gexp' will display the amount of gexp and exp you have earned since that time.
============================= GEXP Gained : 60362 EXP Gained : 320496 =============================
If you are proficient with your MUD client, it is recommended to have a script which calculates gexp per combat-round.