None of the music recording softwares are just press record and go - They all require some level of learning and experimentation to be able to create a decent recording. the simplest solutions are standalone digital recorders which also have built-in mics that work decent, like the Boss MicroBR which can be had for around $150. I have a Boss BR-600 which has a lot of capability for $300 but it still takes a bit of time to create a song from start to finish. But the nice thing is once you get familiar with it, you can lay down a guitar track very easily, which is great if you come up with an idea you want to capture. As far as sofwares go, Tracktion 3 by Mackie is probably the most user friendly, but they are all a bit complex