Before you begin, I'd like to emphasise the significance of keeping good notes. When I started learning ethical hacking, I made the mistake of rushing through the course without taking notes. This was a big mistake because I couldn't recall anything after finishing the course and had no notes to refer to when I needed them. Several good options for managing your notes include KeepNote, CherryTree, Joplin, Notion, OneNote, Google Keep and Obsidian. For taking screenshots for my notes, I use Greenshot, but there is a tool called Flameshot for Linux and Mac users. As for organising my notes, I rely on Notion. Of course, you can use any app or tool that works best for you. The key takeaway is that effective note-keeping is important when studying this field.
Note-taking applications
KeepNote: Note taking and organization
KeepNote: note-taking and organization. KeepNote is a note taking application that works on Windows, Linux, and MacOS X. With KeepNote, you can store your class notes, TODO lists, research notes, journal entries, paper outlines, etc in a simple notebook hierarchy with rich-text formatting, images, and more. Using full-text search, you can retrieve any note for later reference.
keepnote.org
cherrytree
www.giuspen.com
Joplin website
Joplin, the open source note-taking application
joplinapp.org
Your connected workspace for wiki, docs & projects | Notion
A new tool that blends your everyday work apps into one. It's the all-in-one workspace for you and your team.
www.notion.so
onenote.com
onenote.com
keep.google.com
keep.google.com
Obsidian - Sharpen your thinking
Obsidian is the private and flexible note‑taking app that adapts to the way you think.
obsidian.md
Screenshot tools
Greenshot
Greenshot - a free screenshot tool optimized for productivity
getgreenshot.org