2018 is going to be a great year for cryptocurrencies. If you can, investing now would be a really good decision, in my opinion. Maybe wait for a local dip before you get in, or keep buying in smaller amounts to dollar cost average (google it if you're not familiar with the concept).
Actually I feel pretty much about the same about cryptocurrencies, not sure how it will be in 10 years or 3 years regarding cryptos but with all this hype made for sure 2018. would be good year to be in the field.
This is also a solid advice to with smaller amounts on the very start and spread while learning.