My oldest son is 6, and this is our second "official" year of homeschooling.
We use Sonlight for science, which we really like. We have three days of reading/workbook/discussion work, and a day of experiments every week. We take Wednesdays "off" for science.
We use Shiller for math. It was a bit pricey - I think we could've done just as well with Math U See. We use a lot of manipulatives, make our own flash cards, and use M&Ms for subtraction. (because then you get to eat them!

) Sidewalk chalk is my secret weapon for math - we draw number lines on the ground and jump from number to number, shouting out equations and answers.
We use Explode the Code for phonics. We also read A LOT (love the library!). We realllllyyy like Explode the Code - not expensive at all, and a good starting point for reading. It's not a full phonics curriculum in itself (as I said, we practice a lot with reading from beginning readers), but helps him learn phonics rules in an orderly fashion.
We used Sonlight's booklist as an "idea list" for history. We've started a book of centuries that we add dates & drawings to often. In fact, we draw a lot, because it helps DS to picture what we're reading & talking about.
We also have a couple other subjects (handwriting, Catechism, language arts, and spelling), for which we use materials from a Catholic supplier.
Best of luck to you! Homeschooling is FUN!