I'm making a lightsaber in Cycles Render. I'm pretty new to blender and only started yesterday. I've been watching YouTube Videos but usually I can't access something they have and usually messes it up. I'm fine doing compositing and Nodes I just need to know how to make this glow, Current (v) Picture Nodes Picture2 Current Compositing Nodes Picture3

Again I just need this to glow but i keep on messing up! Please help, thank you