Editing USA Travel Guide for First-Time Visitors (section)

=== 1. '''Planning Your Trip: Key Things to Know''' ===
Before embarking on your journey, there are a few key aspects to keep in mind:

* '''Visa and Entry Requirements''': Depending on your nationality, you may need a visa to enter the USA. The '''Electronic System for Travel Authorization (ESTA)''' is available for citizens of Visa Waiver Program (VWP) countries. Make sure to apply for your visa well in advance.
* '''Currency''': The currency is the US Dollar (USD). Credit and debit cards are widely accepted, but it's also good to carry some cash for small purchases and tips.
* '''Language''': English is the primary language, though you will find Spanish widely spoken in many areas.
* '''Tipping''': Tipping is expected in the US, particularly in restaurants (15-20% of the total bill), taxis, and for hotel services.
* '''Transportation''': The USA is a big country, so most people travel by plane between states. However, trains and buses (like Amtrak and Greyhound) can be economical ways to explore regions.
* '''Driving''': If you plan to drive, the US has an extensive highway system, and renting a car is straightforward. However, in big cities like New York, San Francisco, or Chicago, public transport is often more convenient.

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