I advise poloniex as your exchange as this has the highest volume of all, after that, watch the long term graphs of all the high volume coins to see what is generally going on in the markets.
Next, you will want to study the coin you plan to buy on the altcoin announcements boards to see if there is any controversy, potential news to be released, etc. This will help you choose the right coin to invest in.
Finally, try to set limits for when you want to sell and take a profit / cut your losses. This will help not to get emotionally invested and increases your chance of profit.
i agree. you must invest what you can afford to lose because you can't guaranteed profit their especially if you listen to the shill and troller in the chatbox.
a friendly advice buy coin that are stable enough and avoid new release coin because of many bounty dumpers. you will regret if you get caught by them.other advice is stated at
the quoted post. goodluck