New to Bitcoin. Tried to buy $100 on Coinbase with debit card, but it's been 2-3 days and I still haven't seen anything change in my account. Are there any ways I can buy it instantly? Wanted to try out trading on Poloniex, but not even sure how to get coins in the first place.
*Side note: Anyone think they could explain to me why some cryptocurrencies are less than a cent, while some are $1 or even higher?
*(Also, is this the right place to post this?)