Jeopardy
These might be the most common/famous type of CTF. In these, there are different categories of independent(most of the time) challenges.
I personally use to spend time on forensic/stego/crypto challenges. But from time to time also did some web challenges.
CTF Tools
Just a simple list of most commonly used tools in CTF for various categories. web Nikito: http...
Cryptography
Cryptography This is kinda weird category because either this will contain very simple challenges...
Forensics & Steganography
Both of these are pretty similar atleast in CTF. Forensics is a really good field but can be very...
Web
Well I think this is the most important field in CTF challenges(RE/PWN people gonna hate :smile:)...