NPN trasistor tutorial help

I was going to try to make a transistor tester for npn's and I wanted to know a little more about them. Please give me information about this. Whoever helps me on this I give a big thanks to. Also list some projects you made with it. I'm always looking for good ideas. If you have any comment on my question or leave a comment on one of my instructables. Thanks!!!! project_builder

Check the list of instructables on the right hand side. The first one on the list is a tester that was posted recently.

All transistors are different so look up a few and check out there data sheets.
+1, If that fails, try google.
project_builder (author)  Awesome-aniac5 years ago
K thanks I will try those