Like some other people said - how do you access the inventory? I can't see it anywhere, but when I go to the "Recycle" menu the things I bought are there.
Also, how can you find recipes? I try different combinations that seem to make sense but none of them worked so far.
And how do quests work? I fulfilled a couple of their requirements, but nothing happened.
EDIT: Having a socket mismatch between a motherboard and a CPU prevents you from building a better PC, because you can't change either one of them