Someone gave me the snake, as they were moving and could not keep her at their new home.
That's not as bad then... Still though, you'll need some information I guess...
It is one of the largest species of snakes in the world, with both genders potentially exceeding fifteen feet, although it's obviously far more common in females... Some animals will break twenty and the current record length for a captive snake is held by a burm at around ternty seven feet... So it's a fairly big responsibility, literally. The majority of growth will happen in the first three years and judging by the size of the wood chips and water dish there, yours is fairly young still. It'll need larger and larger enclosures as it ages... generally easiest to just build big to start.
Appropriate sized rodent prey as it's growing, about once every seven days... when it hits ten-twelve feet, try fropping that back to every ten-fourteen days, modifying the schedule as needed to maintain a healthy body weight, they have a strong feeding response and can become obese fairly quickly if overfed. Because they have a strong feeding response, it's important not to smell like rodents when handling them for whatever reason. Outside of that they tend to be a fairly docile species, although I have run into a few that were pretty quick to go on the defensive. Anytime you're handling a boid over about eight-ten feet, make sure someone is around in case you need a hand, just as a precaution.
Being an equatorial species the temperatures are pretty obvious- slightly higher than your rainbow boas is appropriate... undertank heat pads, heat tape, lights, ceramic heat emiters- no hotrocks (you already knew that). They aren't super-picky about humidity but it should be above fifty percent as a bare minimum, a little higher if you can maintain it, kicking it up when shedding.
Space is the biggest concern, because of the animal's size... even if it's a male on the small side, you'll need a fairly large enclosure... and you have to remember that they're also a fairly heavy bodied snake compared to most others capable of hitting the same length so it's a lot of animal. They're more suited to being pets than the other bigger species but you have to be willing to invest the money and time into keeping 'em properly or it won't be good for the animal or for you.
Bob Clark probably has the easiest to find accurate caresheets, although there are many out there that are decent. Only one offhand that I can think of which is BAD is on anapsid.org but I'm certain there are others there too. Read a bunch, go with what makes sense or toss a question on here about any specifics, someone'll help you out.
