Hi Firstlady
The older Tamiya kits are not as detailed or as accurate as newer ones, but are a lot cheaper. If you are not worried about counting nuts and bolts, etc, go for an older kit of something that appeals to you. You will always feel you can do better, and might regret spending 'big bikkies' on a kit that you will look back on and want to do again, but better.
Things to consider before you buy:
Budget?
Do you want to try a Camo scheme or just a plain 'one colour' scheme?
Quick build, or take your time? (Cleaning the seam off all those Panzer IV type road wheels gets a bit boring after a short while!)
Period of operation. Are you keeping to WW2 or building from any time period.
Decal options in the kit. Subdued vs stand out striking (like some Vietnam crews did to their vehicles)
Unit Options. (Some people do not like modelling German SS Afv's as a matter of principle; etc)
Whatever you get, I hope you enjoy building it.