When time hopping, always wear your finest jumpsuit and bring a decent supply of chrono-gas.
Remember, the past is not just the past, it's also regulated.
Don't try to jump to a time period with a conflicting fashion sense, or you'll be fashionably incorrect.
Always carry a spare watch battery, you never know when you'll be trapped in a time loop.
Don't drink the water, it's not from the 19th century.