Welcome Sky, feel free to ask any questions you may have and we will do our best to help you find the answers ♥
Everyone has given really good advice, but I'm going to go in a different direction with it. I really would like to see someone start in the other direction with things since NA-East has basically worked out their kingdom picks currently (nothing guaranteed) I think that you should look into what tribes interest you the most, what do you want to do in the game, where do you see yourself best located? is it in a nice forest? Is it in the snow? Is it on a nice coast? These are all questions I think that would also be best to help you out in making your decision.
Having a concrete idea of what tribe you want to play, where you want to play, what you want to do are all equally very helpful in helping you find the right home as well as, if you're looking for more PVP type stuff or PVE type stuff or PVE/Story/Lore type stuff, meaning: Are you looking to be more of a player combat role -- Adventuring(contested lands), soldier etc? Or PVE meaning -- farming, tavern running, professions, etc? or PVE/Story/Lore/Culture type stuff meaning -- Are you looking to more or less create a story, play out a story, follow the lore and stories of the tribes/biome/kingdom, etc?
Those will really help you to learn what you want to do because some means you can be more flexible than others. If you want to play a certain tribe but want to be more PVP/PVE not really Story/Lore/Culture, then you're going to be able to move tribes to other kingdoms to play with people/the community you really truly mesh well with.
But if you're looking for more Story/Lore with your tribe/kingdom/culture of the tribe, then you're not really looking to move around a whole lot from the initial tribes starting point/majority tribe biome home/area.
So its a great and tough decision ^.^