You should get cd/dvd with your motherboard. For start you can install drivers on that disk, same should be for gpu.
Monitor won't need drivers it should be recognized by system, either it will use generic driver or it will download right from internet, most of other devices should also use either generic driver or download it from net. If you get something which came with cd/dvd with drivers for your OS, just install those drivers.
Later you can check websites of manufactuers for your products if they got newer version of drivers.