This year is the year to purify all altcoins because lots of coins are becoming shitcoin in this sector so you don't have to spend time learning because it will only make you more frustrated. At the moment, Bitcoin is the cheapest option and if you have a good investment opportunity, invest now as 2020 is about to start. Personally, I have great confidence in this market next year because this is the year all investors are waiting to join this risky market and will certainly attract a lot of new investors.