Where work-from-home at my place of work has become highly scrutinized because of people using it as a free vacation day, I've never ever had a problem with it at all. I think there's some prerequisites to this advice, though. Firstly, if you haven't proven yourself at work already as a reliable person that doesn't have to be micro-managed, or managers have an wishy-washy feeling about your 'work' character, then ignore my advice, because it's just going to be an epic fail or a bit harder when you start out.
1) Be available when you're suppose to: For shit's sake, I see so many of my co-workers who are 'suppose' to be available during core hours, who, when they WFH, cannot be reached by inner-office instant message, e-mail or phone, don't call into the meetings they are suppose to. I repeat, you do not want to be one of those people. It makes you look bad and it will catch up with you sooner than you think.
2) Set realistic daily work goals: Myself, I accomplish more at home because I'm not being fucked with or getting cube drive-by's, but that doesn't mean I don't kill myself in the process because I am more productive. Test the waters for the first day and see what you get done. At times, I've gotten what I needed to get accomplished in 5-6 hours and I called it a day. There's nothing wrong with that if you're showing production and results.
3) Have what you need to succeed: I have a very nice VPN solution, so I can rely on my own personal computing environment that I'm comfortable with (and also mirrors what I have at work with my desktop). But if you are issued a work laptop that they only allow you to connect into 'their' network with, then get what you need to 'feel' that comfortable productivity. I've never been at a place that wouldn't pay for a wireless keyboard/mouse set or get me a decent enough laptop to take home. Also, if you have books, paperwork, materials, bring that shit home. Don't think that you can get to everything 'digitally' because rarely does that play in your favor.
4) DONT abuse it: I always laughed in my younger, insubordinate and rebellious years when I'd hear "WFH is a privilege, not a right" and now that I'm a bit wiser, that's 110% the truth. I'm just like any other person, I have the TV on sometimes or stereo going, or use my lunch break to go to the hardware store quick for something. See it as your work trusting you do be independent but still a very reliable asset that they depend on. There's no reason to be uptight, you're at home, but don't be a douche and not do a thing get paid for it. It makes you complacent and lazy, and IMHO, that'll see you right out the door in time.