After reading this thread, it seems most of you are pretty bad at investment advice, considering half of the replies are "Don't invest only $10"
So, I have done the only sensible thing, and I went and actually Invested $10 in Altcoins.
Here is what happened.
Fist I used Coinbase to buy $10 worth of Litecoin. The reason for this is lower transfer fee and faster confirmation to send to exchange.
Next I opened an account on cryptopia. The reason is they have Litecoin as one of the trading markets.
Next I purchased a large amount of different coins, and started reading the -ANN-threads for every coin I wanted to buy.
Next watch youtube videos on day trading. At this point I realise half the coins I have invested in so far are pretty bad investment.
Go to sleep
Wake up and check markets. Some of the pump and dump coins are up, so SELL SELL SELL, and recover money.
Buy more Alt coins
Read everything on bitcointalk
watch all the youtubes
sleep
Decide on better investment strategy, start transferring LTC over to Bittrex. The reason, Bittrex has a higher volume, can trade more often.
Only invest in coins from coinmarketcap top 100 with Bittrex account
Do some sleeping, watch some VR porn, go outside.
Realise trading pump and dump coins on nova and Yobit is high risk, high reward.
Do smart math, some coins can be bought for Doge and sold for BTC for instant profit if the timing is right.
Am investor now
I now have $90
So the answer to the original question, Buy all the coins. You will learn more trying to turn $10 into $100 than someone with $1000 ever did. If it all fails in the first month, you got $10 worth of good lessons from it and can try again with the next $10.
also Follow the one rule.... BUY LOW SELL HIGH. if you follow that rule you cant loose money. I even have it on a 'post it note' on the wall just incase I ever forget.
I made a lot of the profit for this experiment from Cream, Asafe2, Kangaroobits, Ripple, Funfair and Elastic.
That does not mean I would buy them all again now.
The best time to invest is is yesterday, the best amount to invest is whatever you can afford to loose.