NikoHP

All of this is true, but it is true of any bussiness. No matter if you're a self hired mechanic, pc builder or even have a small general goods store, those risks will always be there and that's the risk of actually having and running a bussiness. But it is good to know it anyway and this is a great advice. How you tackle those issues is what matters and what makes a bussiness potentially "successful"

Does anyone know good books or tutorials about building servers for hosting, storage, cloud etc.? The more the better! Thanks in advance!

It's great that young people are passionate about making a living of what they love, and yes it is profitable if you know what you're doing and get your pricing for the parts and servicing right. Best strategy is: 1: Component pricing should always be the stock market price for new components, and however much you paid for used hardware. 2: Charge for your work, but don't over- or underprice your services. That's where your profit is, but also your customers' trust. 3: MARKETING! Everything is marketing. Just don't say you can do stuff that you cannot do. Also,post yourself EVERYWHERE, even if you feel you're being annoying. There is NO bad advertising. 4: Warranty is good for new components, but used stuff is too risky! Hope you make a killing out there