This is a list of resources and challenges to learn and practice steganography and forensics for CTF's.
Steganography Tools
Image Analyser
CTF101
Wireshark Tutorial
Some list of writeups to help you better understand.
picoCTF-2019
DesKel's CTF write-ups
r0hanSH Forensics write-ups
Audio Steganography
All the Best!
PicoCTF
CTFlearn
Rootme Stego
Rootme Forensics
Ringzer0ctf
Steganography is a very vast field in CyberSecurity so certainly its not possible to cover every aspect.
The best way to keep learning is to try out more challenges yourself ,keep reading writeups
and participate in CTFs. Because not all challenges can be solved by using readymade tools
If you feel stuck or want to share ideas do tag us in CyberSecDiscord or Telegram
Happy Hacking!