Biasing transistor

[Kost1978]

Hi guys,
I know I saw around here a kind of guide (or a link to a guide...) on how to bias a transistor with a trimmer, using a multimeter, cannot find where I saw it anymore...
Could anyone simply explain me how to do this?

Thanks a lot!

[vick]

http://www.electronics-tutorials.ws/blog/biasing-transistor-tutorial.html

http://www.sm0vpo.com/begin/bias-00.htm

[Kost1978]

Thanks a lot, I'll have a look to them!!!