I use Waterfox myself. It was 64bit Firefox before there was a 64bit Firefox. It's also a little bit behind the current Firefox version, but, I dunno I just like it better.
Be careful with these things especially ones that refer to themselves as "HYIP" they're nothing more than a pyramid scheme. The coin you get, was just coin paid in by someone else
I use Coinbase, but not as a primary wallet. I use it for the coin I want to spend, so there's usually no more than I think I'm going to need in there. I also have a SHIFT card, so some online purchases on Amazon or using PayPal charge to my Coinbase account.
A lot of the people I work with are stumbling upon these, just web surfing like normal, luckily most of them know to ask me, before they do anything drastic like call the number.