I've always avoided flash photography from my SLR days to now with my DSLR. I have an opportunity to get into interior design photography (and get paid for it!), so I've been practicing and practicing and using a tripod ect. I've determined that there are cases where a tripod won't work, and I'll have to use the flash, so I've bought a Pixel x800n speed lite pro external flash. I understand this works with the ttl system in my camera, but where do I learn how to use it? Is it just a matter of plug in and practice?