The main thing, if you ask me, would be to find a vehicle you like enough to want to build a model of — or preferably, a couple. This because “tanks” is a
very wide subject. Would you like one from the First World War, from the Second, from modern times, anywhere in between all of those? Do you like the looks of small tanks or big ones? What colour(s) would you like to paint on them? Is there perhaps a particular type that catches your imagination? And so on.
Then see if
Tamiya makes a kit of it (or of one of them): as already mentioned, in terms of build quality and instructions you can’t really go wrong with them, which makes them pretty much ideal for those who’ve never built a model of this kind (or, indeed, any model) before. It also helps to ask on here if anyone has any thoughts about the kit(s) you have your eye on, because they may point out pitfalls or other things you may want to be aware of.
