Just got mobile version, need help with controls/tutorial

Hi I just got the mobile Backyard Baseball 97. I love it but I couldn’t find an in game tutorial nor could I find the manual from the original anywhere online. So I thought I’d ask here for some questions I had about gameplay.

1. what do stances do?

2)what does the juice bar indicate? What determines when a Juice refill shows up? Do pitchers get worse as the juice bar empties or as their pitch count increases or both?

3. What determines getting a power up? It looks like batting power ups come from getting a hit on a pitching power up, but what triggers pitching power ups?

4. how does baserunning work? Where do I click to make base runners keep running? Do I click the runner and then the base or just the base or something else?

5. How does fielding work? Sometimes the AI seems to field on its own, other times I have to click where I want players to catch the ball and where I want them to throw to.

Thanks for your help!