I want to get into trading with alt coins, and i want to know where to begin. Just looking to make some extra btc. Please help, thanks! 
To start trading firstly you should have a budget which I believe until now you could have 0.05 or more.
But any amount 0.01+ could work at the beginning to help understanding the trading concept, when to invest, when to sell.
For more I would suggest to follow this thread, there are many good answers: New to alt coin trading, Help