Word of caution, some people here are FOS, for example: When trimming your plane's CG, you put it into a shallow dive and let go of the sticks, The proper set up will gradually level out out or climb slightly. A tail heavy setup will make the nose drop. Nose heavy will make it swoop back up. That one was debated for two pages here. Aeropace engineer won.
The proper place for setting up your CG is on the ground BEFORE flying!!!!!!!!!!!!! Not in the air!!!
The proper way to for setting CG location is given as a range in the instruction manual that came with your plane read it understand it BEFORE attempting any flight an overly tail heavy plane will be all but uncontrollable and most likely crash
I do agree with the first part of the quote though.
but will they train me without me joining? the last thing that i need is to go over there and find out that I have to spend 200 dollars just for one or two days worth of training.
First off you'll most likely need more then 1-2 days of training.
Second bare minimum will be 58$ for AMA less if your under 18
Most but not all clubs train new members for free. Don't be surprised if your asked to join before instruction begins.