Keep $400 one side and only go in with $100 at first, you will likely make some mistakes and lose some money while you learn. At least untill you are comfortable with sending funds around and using the correct wallets.. how ICOs work and all that.
Just get your feet wet man, and remember to question everything you see, dont risk too much into one thing. There are lots of scams out there.
I would advise that you split the full $500 up into different sized coins, such as 250 high caps(top 10) 150 mid caps(rank 11-30) 100 low caps( rank 31-70)
This would give you a nice split on risk/reward.
If you make some gains from these you can maybe move some into an ICO in a later date, but ICOs arent great if you are new due to the risk level.
My list of coin names to look into:
bitcoin
ethereum
eos
icon
litecoin
steem
cindicator
take this with a grain of salt. dont ever buy anything just because someone said so !
P.S. be careful of lending platforms