It's a very versatile verb and can be used in a variety of contexts. Here are some examples:
* Tomar um banho: To take a bath
* Tomar um café: To drink a coffee
* Tomar cuidado: To be careful
* Tomar posse: To take possession
* Tomar uma decisão: To make a decision
The specific meaning of "tomar" will depend on the context in which it is used.