i think most of the other replies are on the right track. depending on ur aim, u shd consider different tracks. i.e., if u have no time to keep tabs, and believe in crypto as a whole, try going for a mix of the top coins, especially the platform players like eth and neo. if u are super risk-loving, can consider some icos as well.
I plan to have portfolio! Many people here already have it. Before investing
and making portfolio little search will make no harm. When you see what others
have been doing, it will be easier for you to create a picture in your head what
you want.
Plan your portfolio in advance! You can make your portfolio to look as you wish.
I will give you and example of how it should look:
-50% Bitcoin
-30% Platforms like Ethereum, NEO, NEM, Cardano, and others.
-20% Can be for promising projects that are cheap now, but have potential to worth
more in the future, Litecoin, Ripple, Monero, ZCash, and other`s.
This percents can be different, it is up to you! Decide how much money you wish
to invest and do it like this, do not touch that for years, just add more when you can.