Building your own pc can be frustrating. I never had any real problems with building a computer, but i can imagine some people do.
Heres a nice little explanation in the universal language i also speak in the netherlands.
Personaly i think that that 900 euro for this pc is way too much (that's after taxes). You could get a way much better and faster pc on that budget but you would have to do without that nice little warranty. I can imagine your parents not being too happy about that one, errors with expensive hardware are always created by impatient kids who don't take that extra minute to check if everything is well connected.
I love those kids since they always create some extra (overcharged

) work for me. However, if you take the time and let your parents and brother doublecheck your work there should be no problems at all. It's all a matter of proper reading and taking the time to see what you are doing.
Good luck luck and don't forget to at least purchase an extra 512 mb ram as this computer lacks power because of it :thumbup: