Congrats on starting a new garden!
I have started my beds with compost, composted manure, peat moss, chopped leaves, blood meal, bone meal, organic fertilizer, kitchen scraps, and red wriggler worms...I think of it like a stir fry. Whatever I can get my hands on at the time goes into the bed. Over time I keep adding more of these things...but mostly compost and chopped leaves. Keep this up and over time you will have awesome soil. Just don't get caught up in exact formulas and recipes. Use what you have, follow labels for fertilizer mixes (it will tell you how much to add to a bed per square foot), and know that it is a process, not a one-time input.
Good luck, and keep us posted!