Steve,
Your question is a tad broad. Couple suggestions.
First, divide up the sorts of things you'd be interested in by categories.
Second, do some searches by category (box below the header box, third button from the right, beneath your login name). You'll find hundreds of past threads on all sorts of topics.
Third, after you've narrowed it down a bit, come up with some specific issues you want input on.
Finally, fill out your profile. As JPBeck indicated, in order for people to respond with anything thats meaningfull to you, they need to know where you dive, what sort of diving you do, where you're at along the learning/experience curve, etc.
Then when you post specific questions, you'll receive specific answers based on the information you provide. Hope this helps.