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Items given to a villager can be split into Best, Good, Neutral, Bad, and Worst items.

I recommend starting out with the town mayor, Lewis. He loves Hot Peppers. They are easy to grow and can be planted in the Summer.

If you want to take a look at what items villagers prefer, check out the Stardew Valley Official Wiki: http://stardewvalleywiki.com/Villagers OR
for a list of the best gifts for each:
http://stardewvalleywiki.com/List_of_Best_Gifts_by_Villager
Beware of unwanted spoilers