Welcome aboard!
I'm afraid I'm not sure what your specific tastes are, so rather than point you in the direction of a specific group, I'll just point out a few good places in the forum to get started finding one.
As Arietty mentioned, the making connections section I'd great for finding individuals to jumpstart your web of rp connections. Give it a gander and look at what some other people are doing.
Another thing you might want to check out along the way is the RPC wiki. A lot of people use it as a center for all information on their character for both themselves and other people to reference. You can see those in a lot of people's signatures. Making eight might be a bit of a herculean effort, but one for a main character or two might not be a bad idea.
As far as linkshells, most of the community here is pretty "serious" about rp, though everyone has their own definition of the word, so most of the linkshells you find in the Linkshell Hall (another section of the forum that basically lists all the active linkshells in the community) should largely check that box. Beyond that, there's a whole wealth of variety to choose from, with some linkshells being in-character, while others are ooc-only. There's also a whole gamut of different themes to them. The aforementioned Hydaelyn's Protectors, for example, are a bunch of vigilante do-gooders. There's a similar section for free companies, as well, if you're ever in the market.
If you're looking for some lore help, there are also the lore discussion and character workshop sections. Building a plot with eight interweaving charactees sounds pretty complex, so I imagine you'll need to lean on our resident lore-wizards' expertise at some point or another. Don't hesitate to make a thread in one of those places if any questions arise.
I think that covers most of the basics of what the forum has to offer, but send me a pm if you get further questions. Hope that helped!
I'm afraid I'm not sure what your specific tastes are, so rather than point you in the direction of a specific group, I'll just point out a few good places in the forum to get started finding one.
As Arietty mentioned, the making connections section I'd great for finding individuals to jumpstart your web of rp connections. Give it a gander and look at what some other people are doing.
Another thing you might want to check out along the way is the RPC wiki. A lot of people use it as a center for all information on their character for both themselves and other people to reference. You can see those in a lot of people's signatures. Making eight might be a bit of a herculean effort, but one for a main character or two might not be a bad idea.
As far as linkshells, most of the community here is pretty "serious" about rp, though everyone has their own definition of the word, so most of the linkshells you find in the Linkshell Hall (another section of the forum that basically lists all the active linkshells in the community) should largely check that box. Beyond that, there's a whole wealth of variety to choose from, with some linkshells being in-character, while others are ooc-only. There's also a whole gamut of different themes to them. The aforementioned Hydaelyn's Protectors, for example, are a bunch of vigilante do-gooders. There's a similar section for free companies, as well, if you're ever in the market.
If you're looking for some lore help, there are also the lore discussion and character workshop sections. Building a plot with eight interweaving charactees sounds pretty complex, so I imagine you'll need to lean on our resident lore-wizards' expertise at some point or another. Don't hesitate to make a thread in one of those places if any questions arise.
I think that covers most of the basics of what the forum has to offer, but send me a pm if you get further questions. Hope that helped!
All credit for the graphic to Benedict Whiteraven, you magnificent bastard.