I am using my mobile phone with my 4g internet connection. Doing signature campaigns on alts does not really need computers but a mobile phone will do. The only problem is only the speed since mobile phones have small keypad compared to computers. But anyway as far as my experience goes it is still my minimum requirement and with it I have already earned a thousand dollars.
Same dude... I am only using mobile phone withs 4g internet connection also. Yes,,, i think it is enough to start with this. And also do the reuirements before to start the bitcoin, basic knowledge about bitcoin also include before you start. And i know sooner and sooner you can understand the environment about the bitcoin.