To direct sow your seeds just means to plant your seeds outdoors in the garden where it will grow instead of starting the seeds indoors in containers under lights. Plants that are either difficult to transplant or don't need extra time to get a jump start can be sowed directly into the ground.
Instead of using commercial fertilizers and plant food, why not use some scraps from your kitchen that would otherwise end up in the trash or compost bin to amend and improve your garden soil naturally? Inexpensive and easy, these are my favorite ways to get my garden ready for spring planting. Eggshells, banana peels, Epsom salts, coffee grounds. Find out more at http://www.fresheggsdaily.com/2016/06/7-ways-to-improve-your-garden-soil.html