Harvest Moon Grand Bazaar help PRETTY PLEASE!!!!?

What are the goals?How to you get to build stuff and buy more stuff?I'm using an emulator so I can use action replay.(An emulator lets you play handheld games on the computer,action replay lets you use cheats.)How do you get rid of the rocks all the way on the left?How do I get my storage larger and rucksack too?I can't find it on Google.What's freshness mean(I got this from reading different types of cheats,that's how I know ahead of time.)Why can't I go into the windmills?Please head.Even a link will help.THANKS I REALLY WILL LOVE YOU.