A lot of people actually like that the game doesn't help you on where to go next... it bothers me too though don't worry. I just caved and used a guide to get me to dungeons, then scrapped the guide and did the dungeons on my own. Even with all the upgrades possible, it's still really difficult...
Real hard to get the controls when you've spent your life on more current games. Also, without a guide I don't know if finding secrets in the over-world is even possible without aimlessly dropping bombs and walking up to every statue and burning every tree/bush. I know I had a hard time with the...