Litecoin is a good choice to make small investments. Binance is a best platform to buy or coinbase is also safe. Not sure whether this would be the first choice for investments though.
Litecoin is still one good choice for altcoins. It's old but it's never been too old for investors that are looking for the best altcoins. Same as ethereum, you can have as many litecoins as you have depending on how much you want to invest.
If you want to invest an important amount of money, you should better opt vor Bitcoin, not Litecoin.
Bitcoin should be the first option but if someone already has it and just want to diversify his portfolio with another cryptocurrency, Litecoin is a good choice than other altcoins that we just see here and being suggested by a stranger.