Which kinds of vegetables do you like to grow in your garden?
A bunch of varieties. Corn, beans, and squash grow well together. I do have some problems with the ground being so hard. Any suggestions on how to fix this problem?
What a great selection! Compact ground causes plants to become ill due to lack of nutrients. By breaking up the compacted  area, you can make the soil rich and hospitable, would you like to know how? 
Yes. What do I need to do to loosen the soil. Do I add something to it?
The best way to aerate the soil, is to dig up the compaction 2-3 inches and create some small trenches a foot wide, then fill the trenches with the loosened soil.
Okay. What about fertilizer What types of fertilizer should I use to grow vegetables?
The best fertilisers are organic, they enrich the soil with lots of nutrients. Most of them are made with animal or plant waste and are environmentally friendly.
That's great because I am concerned with the environment. How about pest control? What can I do to get rid of the bugs, naturally?
The best way to deal with pests is to encourage the predators of those insects, you can encourage parasitic wasps by planting umbel flowers, etc.
Are there any seeds that are natural and not genetically modified? I want my garden to be as organic as possible.
Seeds from the USDA are a good choice, created for all gardens, they have safe and natural organic seeds.
Thank you for all the great advice. I am ready to plant my spring garden now.
Good luck you are vey welcome!