When buying coins, and especially with Bitcoin, you will notice that your purchase is in decimal. A Bitcoin itself is relatively expensive, around $10,000 at the moment (as of 15th Feb '18). If you were to purchase say $5,000 of Bitcoin, you would at today's rate be purchasing around 0.5 of Bitcoin. Do not ever worry about this; Bitcoin operates at eight decimals places. You do not need to own a whole Bitcoin or any coin for that matter. Consider it like pence in the pound or cents in the dollar, but with more decimal places.
NOTE: Once you have Coinbase down, try moving onto GDAX. It’s, in overly simple terms, like a better version of Coinbase with lower fees. Coinbase operates both platforms, and both use the same logins. GDAX is the preferred exchange of many Bitcoin traders in the U.S. It caters to both pros and novices. After you master that, then consider exchanges like Bittrex and Binance.
Always learn from your mistakes. Never accept a total loss. Always evaluate the situation and try to figure out why it happened. Take that experience as an asset for your next move, which will be better because you are know more now than you knew before. We all start off as amateurs, and we have all lost money throughout out trading experience. In his first month of trading, Miles went from $1,000 to $300. I’ve lost a lot by selling at losses inspired by fear. No one is perfect, no one wins every single trade. Don’t let the losses discourage you, because the reality is they’re making you better trader if you choose to learn from them.
Realize that Bitcoin isn’t the same as Blockchain. Blockchain technology is something many are bullish on, but that sentiment shouldn’t be confused with being sentiment about Bitcoin specifically. Blockchain is not Bitcoin, a company that calls itself blockchain is not the same as the technology blockchain. The new “blockchain killer” might not be.