Re: Parachutes = Good.
Parachutes don't give the ability to pinpoint land, important for reuse. They are carrying the fuel up anyway, for inflight abort, so might as well use it for something useful on the way down.
But all this is covered comprehensively on the web. I'd suggest Google. It's a well known mechanism for searching for information on the World Wide Web. Or, if desperate, Wikipedia is actually pretty accurate on SpaceX stuff.