Welcome to Vitor and Keldar!!
The Guardians are a community rather then a guild. If you are looking for some place to call home not even just in SW:ToR but in other games then this is the place for you.
I had joined them for Rift and noticed their main goal was SW:ToR, which was mine as well.
So far I have gotten to know many guardians, played with many and always had a positive experience.
The guardians also obey the Code of Honor which makes them a vry desireable guild on any server they join and are welcomed into any community with open arms.
If you wish to be a part of a community like that one then Gyun Nah is the person to talk to!