Wanting to grow a garden this year. I do not have a green thumb help!!!!?

So i am wanting to start growing a small garden this year. Maybe just some watermelon, cubers, tomatoes, strawberries, im not sure what else. I am from indiana. When do i plow? When do i plant and how do i give them the best advantage to grow without fertilizer. Any tips, tricks, or ideas to put into the garden. I have no green thumb what so ever so, how often would i water?