1. Open http://www.readmanga.today
2. Search your the Anime
3. Open Any chapter
4. Right Click on the Image and select "Open image in New Tab"
You should be in funmanga.com in the url address sample "http://funmanga.com/uploads/chapters/7631/346/1.jpg"
5. Just copy "http://funmanga.com/uploads/chapters/7631/346"
6. Open IDM if don't have u can download at https://www.internetdownloadmanager.com/download.html
7. After Opening IDM click "Grabber"
8. Paste to "Start page/address" you can rename the project name if you want after that click "next"
9. Select "All files to The following folder" and you can create your own folder for your manga also check "Use original relative folder" then click "Next 3 times"...