a lot of stuff i use for my site can be found on my links page! for the fonts i've used you can look at all of them here :)
i usually have a little space in my pages (usually in the footer) dedicated to the credit of materials used in the respective page! on older pages, you'll find some credit links in the source code :)
a lot of the graphics in my site are from collection pages that rarely have their stuff sourced. i have tried my best to look for credit on some of these but if i've used something that is not free to use please contact me and i will happily remove it! if you know the credit for something you don't see credited or can't find what you're looking for, you're always welcome to send a msg in my chatbox or e-mail. happy coding!
these will depend on the theme selected!