Review: LG Rumor

I bought two Rumor's yesterday for my wife and I. I told the sprint rep that I need to use mine for work. I travel residentially and need access to Mapquest or a Nav system. Nav isn't neccessary, I can do what I need to do with a map such as mapquest. I also need to get emails and access the internet and view websites. My wife uses texting features a lot, emails a lot, and calls a lot, but doesn't really use the internet other than for email. He suggested the rumor and the everything plan. Now, I'm home working with the phones and reading the phone scoop review and having some difficulty.
1) sucks that I can't use an MP3 as a ring tone, but not a deal breaker.
2) When I go to a website like youtube it says not enough memory. Huh?
3) The review says that it has slow internet. Not good.
4) I don't understand this, but I can't look at external websites the same way I do on my home computer..? Something about it not being microsoft, but at home I use a Mac anyway. Sure I needed flip4mac to watch porn, but what about my phone?