COMPOST, COMPOST AND MORE COMPOST...
(*Make it yourself or start off with buying some bags is okay too*)
AND throw in some of that great aged manure
and you're off to an AWESOME start..
Blood Meal, Bone Meal, Fish Meal, Cottonseed Meal,
etc. are all great sources of organic additives
that you can add to your soil to improve it..
They're slow to release and gentle on your
plants..
Fish emulsion is a great foliar feed too...
P/S Welcome to The Garden Helper's Forum by the way, dont' think I've gotten to talk with you before...
There's lot's to do here, and lot's of great info and The friendliest gardening community on the internet...