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Traditionally THE unofficial RP server has been Balmung, but for now it - and several other servers - are completely closed for new characters due to being very overpopulated.
Because of this people are trying to create alternatives. As you have gathered there is indeed an initiative going on trying to make Omega into the main EU RP server.
Since the Omega server is, quite literally, less than a week old and many people have been busy leveling new characters or playing the new expansion with old characters no RP hubs have crystallized yet.
You will likely be able to find some RP in each of the three starting cities.
If you follow the main story then around level 15 you will get a quest that takes you to all three of them, and after that you can travel freely around the world. Shouldn't take more than at most a couple of days play to reach that point.
Guilds are called Free Companies in this game. How one finds and joins them is about the same as in other games - i.e. it varies from FC to FC. Some will advertise widely, some won't. Some will require a detailed application, others will invite you on sight.
Linkshells are basically private chat channels, but much like FCs one has to be invited into them.
Lore... Well, there is a lot of it, so a quick summary would still be very long.
Much of the lore will be revealed as you play through the game.
There are many posts on this forum about various aspects of the lore as well, so you can try reading through that.
Otherwise you will have to be a bit more specific about what you want to know.
Because of this people are trying to create alternatives. As you have gathered there is indeed an initiative going on trying to make Omega into the main EU RP server.
Since the Omega server is, quite literally, less than a week old and many people have been busy leveling new characters or playing the new expansion with old characters no RP hubs have crystallized yet.
You will likely be able to find some RP in each of the three starting cities.
If you follow the main story then around level 15 you will get a quest that takes you to all three of them, and after that you can travel freely around the world. Shouldn't take more than at most a couple of days play to reach that point.
Guilds are called Free Companies in this game. How one finds and joins them is about the same as in other games - i.e. it varies from FC to FC. Some will advertise widely, some won't. Some will require a detailed application, others will invite you on sight.
Linkshells are basically private chat channels, but much like FCs one has to be invited into them.
Lore... Well, there is a lot of it, so a quick summary would still be very long.
Much of the lore will be revealed as you play through the game.
There are many posts on this forum about various aspects of the lore as well, so you can try reading through that.
Otherwise you will have to be a bit more specific about what you want to know.