A little bit, more so of the second group which split into to basic groups called nephites and lamanites. There is less detail generally on the first group known as Jaredites. From the accounts both groups got to the americas by boats of some form. When the second group was journying they would hunt mostly, probably also look for berries that were edible and etc.. but didn't do any planting and that sort.
For the first group as to whether they were hunter gatherer or agriculture dominant, there isn't much to draw on.
For the second group there is a little more info the lifestyles. Sometime after the group got to the Americas it broke up into 2 main groups which grew into the 2 main civilizations.
one split were called Nephites, and it's from this group that most the records come from, as well as the one that usually had the Gospel throughout the history. Whenever it talks about the nephitesand food there's usually some comment or another about the fields. They are commented on as being more industrious and builders of cities.
the other split were called Lamanites and the boM describes them as what would be Hunter Gatherer; they would hunt their food rather than stay and build and till the ground, they wore animal skins (usually loincloths) they became more warlike. It also says their skin darkened, and that they would put markings on their skin.
Eventually when both civilizations fell into great wickedness, the Lamanites destroyed the Nephite nation.
hope that helps.