My model of the U.S. M4A3 Sherman Medium Tank
One thing on these tank models that I do find easy to do, is fitting the vinyl, one piece tracks. I've heard that some people struggle with these and find it hard to use a heated screwdriver to melt the ends of the track together. In my opinion, it couldn't be any easier! One end of each track has two holes, the other end has two posts, you put the track in place around the wheels, locate the posts in the holes, then, with the heated, flat bladed screwdriver head, you gently soften the protruding ends of the posts, so that they 'mushroom' and lock the ends of the track together. Simple and easy!
Badly drawn diagram of how to join two ends of a Tank's tracks!