Elements 2 is only a slight upgrade to Elements and you will not gain by upgrading.
Although yours came free with your hardware, [Scanner?] it is the same version you would have to pay £60.00 for in the shop as a standalone program.
It's an excellent program and one of the best to use. Once you feel you have outgrown it, then you will need to consider buying something like adobe Photoshop. This is the program that Elements is taken from, but far more powerful/expensive. Or Paint shop Pro. again quite expensive.
There are other programs that you may want to consider but the two above are the ones most used by people requiring professional image editing software at a reasonable price. j.