Welcome to the forums.
I recommend the Panzer II ausf F/G by Tamiya. The kit is very easy to build. There are many reference photos of those Panzers online as well. The tracks are one-piece so that is also easy. The overall kit is small compared to a tiger or sherman, but after all a Panzer II is an early war machine, ligtly armored.
You can find the kit NEW in the box for about 10 dollars.
In addition, the kit comes with figures, so you can try your hand at painting up some desert afrika corps germans.
Good luck!
Let us know which way you go and if you need any help.