if you have the budget go for MAC!
or if you just want to start, grab a laptop with Windows 7 64-bit OS
* 4GB of RAM
* Dual Core, I prefer Quad Cores (i Core series or AMD)
* With built in GeForce or AMD Radeon Graphics Card
* 300GB HDD or higher
* you can check Sony VAIO or Dell brand.
Tip: no unnecessary software installed to avoid unwanted crashes!