Passport
One of the most important travel documents can be your passport. Depending on where you plan to go, you might need a passport to identify yourself. If you do not already own a passport, the passport application should be done in an early travel planning stage. Getting a passport might take several weeks ( depends on the country you are ).
If you already have a passport, check if it is valid long enough. Most foreign countries require it to be valid until at least 6 months after your return date.
Visa
For many destinations, you might need a visa to enter. Check early enough to be able to apply for a visa. Visa are available at the respective embassies or consulates.



