Collecting ? FUNdamentally, that is Fun or what may brings delight to the collector.
Very few young generations, now a days inclined with coins.
I am very happy to hear and see young ones.
It is quite difficult to assemble a meaningful collection in a few years, the path must be chosen carefully giving a good share of life following it.
If it matures someday, it is likely that the collection will indeed be worth something or brings enjoyment on its own in the future.
The truth is, it always need an incredible patience when doing this. Some collectors with generous knowledge and resources is hard to find.
In time, all these matters will be self learnt throughout depending on interest, knowledge and pursuance.
I can only say, for what is really the interest in life? what are the future plans, the work ambitions.
From that point, it can be strongly incorporated with coin collecting.
(Investing is other way around because "Collecting" is designed for enjoyment)