The year 2018 is not a profitable year for almost all Crypto fans, especially those who have just tried Crypto and have not enjoyed the benefits/profit. I do not mean to be pessimistic / give up on the current conditions, but how if the market does not improve in 2019? what will you do with all the assets you have? will you sell all? or Will you make it a treasure? or will you will get out from Crypto? or any ?
if I, then I will try to survive, who knows because the market changes very quickly.
because I am a new person on Cryptocurrency and still want to keep learning in it

Yes, it's still worth investing in some cryptocurrencies this year. More than that, I'd say that each following year cryptocurrencies will keep on becoming more and more worthy investment because they do develop and the projects (and technologies) behind these currencies little by little get embraced by society. The process is gradual but when you'll look back at 2018, in 2028 you will notice the big difference because by 2028 technologies similar to blockchain or distributed ledger will be a common place and no business will be able to survive the competition with the companies using decentralized eco-systems because the service provided by such companies is considerably more efficient: it requires less people involved, decentralization makes all records available globally by demand to those who have the access rights, peer-to-peer market doesn't have to feed the intermediary sector, all the conditions of any kind of deal must be executed, and only when it happened the system executes the transaction − human error becomes less probable, etc. Well, just my two cents on this. Better get going as I monitor my live
trading sessions. Best of luck!