HI Truscott, Welcome aboard!!

I agree with John and Paul, beside goto maybe nice to start with, but if you
have at least one arm, an eyeball a copy of CDC (freeware) and a printer
(optional, but handy) and throw in a lil patience you will see you already
have goto built in : ). Plus you'll learn the sky quicker using you in built
setup mentioned above, purely from scrunitinising the sky with your eyeball
instead of a hand controler. I have logged many an extra stella wonder from
star hopping. Save the electronic goto system until your old and lazy : ) and
go get some aperture... being new to this hobby you want to see a lil Wow! factor.

Just my 2 cents worth, However I have never tried a Celestron Nexstar GT4
so I cant comment on it's performance.

regards,CS