If you are seriously interested in growing blueberries, I would find a local nursery, or a reputable online website, and buy disease-free blueberry plants suitable for your climate. Different varieties of blueberry (there are over 100) have
different growth habits (northern highbush, southern highbush, half-high, lowbush, and rabbiteye) grow in different parts of the US.
It could take five or more years to get fruit by starting with seeds from a store-bought blueberry, that is, if the variety thrives in your climate.