"I've heard that it's better to start vegetables before fruits. Is this true?
Purists recommend that vegetables be introduced before fruits so that infants don't learn to expect that food should always taste sweet. This is one of those nutritional directives that sound great in theory, but many of us who have fed lots of babies have found it hard to put into practice. First of all, babies are born with a sweet tooth. Their tiny tongues are more richly supplied with sweet tastebuds than with any others. This makes sense, because human milk is sweet, and breastfed babies are less likely to willingly accept the bland taste of vegetables than formula-fed babies. While there is no doubt that vegetables are nutritionally superior to fruits, most parents find that babies will happily eat fruits, making them hassle-free first foods. The nutritional content of starter foods is of secondary importance; the main goal of these early solid food feedings is for the baby to learn how to swallow foods of different textures. You're likely to have more success with fruits than with vegetables. When introducing veggies, try the sweet ones first: carrots and sweet potatoes. If you have a baby who loves vegetables, good for you! Don't worry if your baby attacks veggies with less enthusiasm than fruit. He'll eventually learn to like them if you keep offering them."
And on Kellymom.com
"Moms are often told that vegetables should be introduced before fruits "so baby doesn't develop a sweet tooth." Keep in mind that breastmilk is quite sweet! Some experts suggest that fruit may be a good first food for a breastfed baby since the taste is closer to that of breastmilk - baby may be more likely to enjoy this new and novel experience if the taste isn't so unfamiliar. Also, since birth baby has been tasting different flavors as they are passed through into mom's milk - many feel that this ever-changing flavor of breastmilk is likely to make breastfed babies more likely to enjoy the varying tastes of solids and less likely to be picky eaters in the long run."
As for cereal - there are severl resources that say starting with cereal isn't necessary.
and I know there are others on the LLL website but I can't find them right now.