There are plenty of ways to find where you're going on Earth using the stars, mirroring Polynesians who used to navigate the vast Pacific using only the waves and the stars in the sky. Here I'm focusing on the northern hemisphere, but the idea is still the same. If you forgot your compass, you are not out of luck! Here is your guide to make sure that if you're ever in that situation, you can tell where you are and where you can go.
The easiest way to determine the direction of north is to find the famous the Big Dipper asterism, or notable collection of stars within a constellation, in this case being Big Dipper. Drawing a line between the two outermost stars of the Big Dipper (called Merak and Dubhe), then extending that line four times further than the original (in red), you will get close to Polaris, the star that denotes the celestial north pole. Start with Merak, the one further away from the handle of the dipper.
Cassiopeia is another constellation which orbits the north pole relatively closely and can be used to find north if Ursa Major is covered by clouds or terrain. It can always be found on the other side of Polaris from Ursa Major, so if Ursa Major is too low, Cassiopeia will be near its highest, and vice versa, giving you another useful way to find north. To do this, recognize that Cassiopeia is made of two triangles stuck together. Take the line cutting each triangle in half and extend them out until they intersect, which will put you decently close to Polaris.
Both of these can be used throughout the whole year, but the next uses the Summer Triangle, which you'll never believe what season it can be used in! The triangle is made of three bright stars (Altair, Deneb, Vega)