Daily routine - well, that depends a bit...
Assuming that they are out all day, and in (or with access to shelter) all night.
1. Early morning, you stumble out of bed and swear at them.
Sorry, seriously now:
If they are in full milk, you'll have to be milking twice a day, at roughly the same times - although I think they are more flexible as to times than some people want to make you believe! It doesn't have to be exactly 12 hours between the milkings, you can get away with, say, 10 hours during the day, and 14 hours at night (for example, milking at 7am and 5pm).
Some people find it easier to feed them some concentrate during milking (some, again, say you should try to avoid that

). I've always fed them their grain/concentrate while milking, which gives them something nice to look forward to, even when the positive experience of getting rid of that pressure on the boobs is not enough anymore (later in lactation) to make it something to eagerly queue up for! Quantities - again, that depends on breed/size of goat/milk they produce.
Goat should then go out and have access to green stuff or, in winter, hay and straw. They hate the wet, so if it's raining or the field is very muddy, it's better to keep them in - which makes it important to have a shed big enough for them to turn around in. Make sure they have enough clean water at all times. And if it's a "typical" nice flat bit of pasture they are in, it's a good idea to give them something to play with - trunks of trees to jump up on, or big rocks, or anything they can stand on, hide behind, run around... Goats get bored very easily, and when they are bored, they try to get out and explore beyond the fence!
Basically, repeat milking in evening and, either lock them up in shed, or leave them out with access to shelter. Give them a bit of hay or straw to chew on for the night.
That is the minimum of attention they need on a daily basis. You'll have to do new bedding once every few days - goats produce fairly dry muck, so they actually stay pretty clean and don't need as much bedding as, say, cows. They don't need mucking out more than once or twice a year; it is, in fact, better to leave the muck to build up, as it gives them valuable insulation against cold from the ground. I muck mine out in late spring, once the nights aren't too cold any more, and again in autumn (with less build up), before it starts getting cold - just to avoid that by the end of winter the muck reaches the top of the shed...
Since I don't have enough grass for mine, I go and pick an armful of weeds every day (willow herb, cow's parsley, groundelder, cleavers, thistles...). It's always good to supplement their feed with weeds and leaves (prunings from trees etc). Goats aren't good grazers; they are browsers, and would naturally prefer to walk about in light wooded areas, where they have access to all sorts of herbs, grasses and leaves, so if the pasture you have doesn't supply that, you should! But that's not an absolute necessity - they'll do well enough with just boring old grass, some concentrate (if you want milk), and mineral supplements. (Mine get seaweed meal.)
During the year, you also have "special events" like kidding to cope with, getting them pregnant in the first place (depending on how you want to do that - borrow or buy a billy, or AI); also footcare, and possibly other health problems. Generally, goats don't have that many problems - mine have never been sick in two years, and I've only needed to do their feet once a year. Dairy goats, however, might have problems like mastitis...
Oh yes, and you'll probably spend time now and again on fixing fences. Even if there is no hole in them, some goats will find one or make one, if necessary.
Not a very structured picture of goaty requirements, I'm afraid, but I hope it helps to give an impression of what keeping goats entails.