I started mining in about nov/december last year,
All I had was a laptop and bought a usb block erruptor of e-bay, then my hobby slightly became an obsession from that I now have an S1 a block erruptor blade, about 5 U1 4 U2 (Purchased with mined BTC) 3 Bitfury and 1 Bi*fury. I started small but slowly getting bigger. I look at it its better then a train set. So in that regard if its something you want to do then do it, just be aware that you may put more money into it than get back.