Welcome to secret world Stark =).
SWL is both group and solo oriented. It’s main selling point is its story telling, which for an MMO is amazing, and hard to find any competition for (imo) unless you compare it to solo player story based games. If i had to talk all things SWL i would still be typing this in two days, so i’ll just geek out a bit about Story =P.
Story content is primarily aimed towards soloing, and doesn’t require top tier gear in any way. If you wanna really get the best of this part of the game (i can’t recommend it enough) take the time to investigate everything you come across. Listen to the cutscenes, they are brilliant. Read the hand-in reports, they give you the flavor of your faction. Talk with NPCs, each topic can be asked for more info until it greys out. Don’t just race through the story mission, but let the other missions lead you there. SWL has this way of giving you small pieces to the puzzle in almost every word and detail, but you won’t see the connections for a long time until suddenly everything clicks.
As for the missions, try and drop the idea of mission hubs that you might be familiar with from other MMOs. Take a mission, follow it to wherever it leads you, hand-in the mission (you rarely return to an NPC), then look around to see what is nearby. You will often find you end up circling back for any missions you left at a previous location like this.
A little fun extra that some immensely enjoy, and others happily ignore. Simply observing the world can give you small pieces of lore too. Some mobs will actually show their life cycle if you pay attention. While the game does spawn them in the regular “boop here is a respawn”, they also illustrate them coming forth from whatever is their source =)