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You don`t have to spend alot of money to start mining cryptocurrency,with a small investment you can start making a small passive income monthly,in this video i show a mining rig that cost less than $1000.00 to build and make around $250 per month.you can keep your coin or cash them out.Start mining and get to earning. https://karl.tech/content/images/2016/04/ethereum-road-network.jpg
Looks like a good way to subsidise your income. who do you contact to get into mining? :)
you can just build your own rig ,a few GPU and a motherboard with a Power supply and CPU,there are many tutorial on YouTube to get you started without breaking the bank