Just wondering if someone can give some simple basic tips on using a flash and maybe some guides or rules. I have a speedlite on my Nikon and never explored how to use it better and would like to know any tips some members may have.

I read the guide in the sticky's, but thought it would be nice on a few more tips.

I constantly use the ceiling etc to bounce the flash off and was thinking of getting some other gear for use with portrait stuff etc.

I guess I am still learning how to use it correctly and someone may be able to mention something I haven't thought about.