How can I add two shaders to a single object ? I have a transparent shader and also want to add a self ilumination shader as well to it.
Actually you can use more then one material: Go to Mesh Renderer> Materials> size and change that value
You can only use 1 shader on 1 material, and 1 material on 1 object. To achieve what you want, you could use a shader that is transparent and glowing, if can’t find, you can wrtie yourself based these 2 shaders. (shader is actually a script)
You can try out Strumpy’ s Shader editor: http://forum.unity3d.com/threads/56180-Strumpy-Shader-Editor-4.0a-Massive-Improvements
You can try to make a shader with this.