Aww, thanks VetGirl!
Generally speaking, Arabians are not hard keepers, but this does depend on the individual horse and it's metabolism system and behaviour. Mine are all super chunky right now from eating and not working.
My Arabians are all quiet, however they are handled everyday right from when they are born, thus they've got a very strong bond. Some Arabs can be hyper and might require more handling. Sometimes they take longer to get the hang of things, but once they've got it, they've got it forever. They don't usually step back in their training unless of human error.
They are extremely intelligant animals and I wouldn't suggest training them like you train another horse. They really focus and are willing to trust, and will form a bond with you like no other.
However if abused, they do tend to be unforgiven and can hold a grudge, making you work a bit harder to gain their trust back.
Polish/Crabbet/Russian/CMK lines tend to be more of the quieter, stockier built working Arabians. Eypgtians I've found a bit more high strung, and with more delicate bone structure. They are mostly the halter Arabians.
They are wonderful animals and I couldn't ever imagine raising another breed. They have a special power that just grabs onto you and won't let you go once you get to know them.
That being said, I would ask questions as to WHY the horse is free.
You don't want a free horse for a good deal, just to find out it's got health problems.
How old is the horse? Body condition good? Is s/he okay to handle? Any training done? How are their feet/teeth? Do you know the person given them away?
And if you decide to take the horse, know that it's okay to realise that s/he might not be the horse for you, and you're willing to find s/he a home where they are more suited.
Go out and meet him/her, and if you click or see something workable, go for it!
They are awesome horses and truly one of the best sort of friends you can have. :)
PS - I always love pictures! ;)