You need plane tickets.
You need to ship anything that you need, thats practical to ship (small, personal, important items that wont fit in airplane luggage).
You need at least 6 months of money to cover rent, food, application fees, transportation (whether public or purchasing a vehicle), possibly even more if the country has a "prove you wont be a state burden minimum bank balance" rules, until such time as you get residency paperwork allowing you to work, before you ever begin to work on citizenship.
Depeneding on where you went, you might also have to take language classes to learn how to speak and write in a different language.
plus even more money for just for random happenstance, emergency, recreation (because yes, even poor people deserve to have some recreation), etc.
You're not just gonna step off an airplane with 2 grand in your pocket and get a place to live and start a new life.