One of the first things you can do before even planting your seed/seedling is to make sure the soil you are using is going to be the best. To check this, a PH test kit is essential.

There are many different types out there, and they all produce similar results. Check out this video to see the one I got, and how easy it is to test your soil.

PH test kit video

The test kit in the video cost roughly $18 from Bunnings and is enough to do 30 tests.