I've been using XNA for a few months now, and I've decided to switch over to Unity. I want to use Unity in 2D, instead of the default 3D. Basically, I'd like to first get an idea of how scripting works in Unity (I went over the manual, but I'd like to see a tutorial that goes through the process), how to effectively use 2D in Unity, and the recommended plug-ins for 2D in Unity. I'd appreciate any advice possible. Thanks.