Hi, I am still ebf my twins who are a year old on Monday. I would burn ignore the Gina ford book, at least initially, and just go with the flow, feeding purely on demand. It is very hard to begin with, as you never really get much of a break from feeding, but that phase doesn't last long. I did a mixture of tandem and single feeding, depending on when they wanted it, although as others have said, I never tandem feed in public as you literally have to sit with your tits out to attach them both. Agree that a good pillow is worth the investment, particularly as mine cluster fed in the evening.
With regards to expressing, I never bothered as any time I wasn't feeding I wanted to give my nipples a rest! Mine have had the odd bit of formula (once they reached about 6 months and had settled into their own routine) when I've needed to leave them, but otherwise I've found breastfeeding much easier than the hassle of bottles. As you have bf before, you'll feel more confident with what you are doing. I was much happier this time to listen to the babies, rather than try to fit to some daft 4 hour feed rule (I have a 3yo who I tried to do everything 'properly' with!)
At nights, I did a dream feed when I went to bed ( only stopped this in the last couple of months) and I did wake the other to feed when one woke up, as I felt any chance you had to get a block of sleep is worth taking. One or the other still wakes for a feed usually now, hence I am up at 5.30, but they are starting to settle now.
Just one word of warning, you may have to be a bit pig headed in the beginning as everyone (including the MW's in the hospital) was telling me I'd 'have' to use formula and it was impossible to ebf twins. I think all these positive stories prove otherwise. Plus, I have found it more difficult making sure my toddler got enough attention initially as you are a bit stuck to the sofa in the early days. He also took a renewed interest in what I was doing and I think over the last year we have watched 'cars' about 1000 times, but we've got there.