Need a Fishfinder education

[APB]

I'm thinking of getting a fishfinder but am ignorant at this point of what is involved.
There is the display screen but what is the transducer? how is it installed? does transom mount make a difference? What is the signifcance of the different kHz figures?
Is pricing based on the screen dispalay and then a transducer is seperate?
Iknow...Iknow....lots of questions... any answers are appreciated or even direction to a site that explains all this.

[Drifter]

Click > HERE < for a tutorial from Lowrance. At the bottom of the link, you can click on "next" for a few pages of continuation.

[gibbsb]

You can go to the Garmin and Lowrance web sites and find info. The BoatUS and West Marine catalogs have a lot of info on selecting electronics. You need to go to these places and then come back with specifics. You can also do a search on the THT site.

[AlexT]

Also, if you go to the Lowrance website you can actually download the software that runs on there units and run it in simulation mode on your PC. If you buy a Lowrance unit its a great way to play with it and learn all the functions. If you haven't bought yet, it would be a good way to get familiar with fishfinders in general so that you are more educated when you go shopping.