There are basically three types of containers.
Glass containers allows you to see the dirt. When it is light brown the soil is dry. When you water it the soil will darken. You can also see if the water is puddling in the bottom so it is easy to avoid this. Do not panic when the dirt dries out. Let it be dry for a few days before water again.
Containers with holes in them sometimes give a false sense of security. The hole will let the excess water drain out but if you are watering it so much that a lot drains out, it is probably too much. You can water the plant lightly so no water drains out but if you do that too often, the soil may be constantly wet and thus the roots will rot. Again, let the soil dry between watering.
When using solid containers (without holes), keep track of your watering with a calendar. Set your calendar for watering every 2 weeks to ensure you don’t over or under water!