I recommend making your own note page which could actually turn into many pages. Creating your own notes will seal it in your memory. Use Google keyword searches to find out answers to your own questions. For example if you are reading about handguns and someone uses the term
CC, you could immediately Google
firearms cc and by just scanning the results headings, you will be able to quickly see that it was probably referring to "
Concealed carry". You might see someone use
EDC. A quick google search of
EDC firearms or
edc gun will show that it stands for
Everyday Daily Carry.
With search engines, use as few pertinent keywords as possible and don't use quotes unless you want to your search results to only include web pages that have the words that are quoted placed together like the appear in the quotation marks.
All computers have NotePad which will let you type, edit and reorganize your notes by Copying/Cutting and Pasting. New computers come with OneNote or you can use Microsoft Word you could organize your notes and also save useful diagrams you may find on the Internet.
To start, you might want to begin an alphabetical list of abbreviations and terms and their meanings. In addition to the alphabetized list, you could also begin with an outline such as the one below:
Ammunition
Rimfire
Centerfire
Firearms
Handguns
Revolvers
Semiautomatic
Blackpowder
Long Guns
Bolt Action
Lever Action
Semi-automatic
Fully-automatic
Blackpowder
The above outline is just a suggestion. Looking up your questions by keywords will lead you to pages that have comprehensive information that you will want to save as an Internet Favorite or Bookmark. I have found Wikipedia to be pretty accurate on firearm subjects.