• Do not eat anything during your long-haul flight, drink water
• Sign up for most airline and hotel programs
• Stay with one airline and rack up miles
• Micromanaging different travel programs not worth it
• Go with the usual, regular route cheaper ticket
• Book tickets ahead of time
• Pick the airport closest to the city
• Wake up whenever you want to
• Download offline maps and dictionaries
• Hotels usually have cable, adapter, or charger to lend you

I think that's all I learned and practicing.