Beginner with Questions

I am a total beginner at Chronoforms - and somewhat ok at Joomla.
I recently downloaded the component of Chronoforms and built a registration form on my site.
Am I able to post my form here: (Ill give it a shot)
http://web01.dnsnetworks.ca/foundationhockey2/index.php/component/chronoforms/?chronoform=Player-Registration-Form&Itemid=671
Anyway, how to I
A) make it so if someone enters something wrong or misses an entry it gives the user a warning
B) view the entries
and
C) add a pay pal payment option?

Thanks for your help!

Also, do you recommend that I purchase a validation? What is the purpose other than removing the "Powered by..."

Wow! You know your stuff! Thank you ... Could I email you if I have more questions or should I stick to the forum?