To use a Nespresso machine, follow these basic steps:

1. Ensure the machine is plugged in and the power is on.
2. Fill the water tank with fresh water (at least one quarter full).
3. Turn on the machine using the on/off button and wait for it to heat up (indicated by a steady light).
4. Insert a Nespresso coffee capsule into the capsule slot.
5. Close the lever or handle to lock the capsule in place.
6. Place a cup under the coffee outlet.
7. Select the desired coffee size by pressing the corresponding button.
8. The machine will brew the coffee and stop automatically.
9. After brewing, open the lever to eject the used capsule into the container.

If hot water is needed without coffee, turn on the machine, lower the handle without inserting a capsule, and press the hot water button if available.

This process can slightly vary depending on the specific Nespresso model, but these steps cover the general use of most machines. If more details specific to a model are desired, please specify the type of machine.