easiest way to grow blueberries?

Acid soil. That's 90% of it. Blueberries want pH somewhere around 4.5-5.5, and most garden soil is too high, which is why they sit there yellow and sulky. Easiest route is a big pot with ericaceous (azalea/rhododendron) compost, watered with rainwater if your tap water is hard. Mulch with pine bark. Plant two different varieties near each other, you get noticeably more fruit. And pick the flowers off in the first year so it puts energy into roots.