What is the best way to retreive Glowstone in the nether? Usually it spawns above the lava and I'm having a hard time making bridges out of the netherrack.
Glowstone spawns in clusters on the ceiling of the nether usually. My preferred method for gathering it is to walk underneath a cluster, piller up with dirt or something else easily diggable, then build a platform underneath, so that as you break it no glowstone escapes.
When you're done, simply dig back down your pillar. On peaceful mode with no ghasts, this should be relatively straightforward :)