your welcome and when I first joined I had the same problem so to start with yes the photos come from the gallery on the website
make sure you have both the forum and website up
then go to the gallery you pick the one you want to use and right click and go down to copy image address click on that
then go back to the forum page you want to post on click on like you do when you are posting a message click on the square that looks like a photo of mountains and the sun the letters [ img] [/img ] will come up right click between the two and click on paste and it will put it there
then you can type what you want underneath
if you want to make a say what of the ones we have posted you click the quotation mark in the corner of the post and it will show you take away the quote at the beginning and end of the post and then change the writing where we have written to what you want and post I hope this is helpful
A classic now 
. Cheers!