To maximise its life, you can regularly coat it with olive or sunflower oil for a few minutes. Eventually, marks will appear due to knives or pizza cutters. This is normal, as pine is a softwood. The first mark will look impressive, but the next ones will make the board look like aged wine.
To clean it, a damp sponge is enough. Do not leave it to soak, as this could damage it. Do not use any detergent. Wipe it dry to prolong its life and prevent cracks.
Don’t use it for cooking. Keep it away from sources of excessive heat.