FTM Foreskin Growth
Information about how foreskin growth effects surgery, is factored into surgical considerations, and is affected post-surgery will be here soon.
Check the foreskin restoration reddit for many, many links and an FAQ, mostly concerning cis male and trans female foreskin restoration.
Check the 'Grow your TDick' reddit for trans male specific information, though mostly concerning growing in size rather than methods of foreskin growth.