Hello,
there were some exchange like cryptonit.net which accepted PayPal by the past, but I'm not sure it's still the case and there were high fees on PayPal purchases (30%).
Yes, you definitely can do it, I highly recommend you the platform that I'm currently using, Localbitcoins.com, this website is very easy to use you just have to follow the instructions very carefully you can buy and sell with almost every bank and electronic account. It works with a reputation that can go up very quickly depending on how many transactions you will be doing during the month, the more transactions you do the more reliable you become as a user. There are also many other platforms that you can use but this is the only one that I'm implementing at this moment, best of lucks with your further Cryptocurrencies investments.