Welcome to the Dark Side.
We did mention the compulsory sandals and beards didn't we
Now its time to learn, the best advice is to stop thinking " I want this program" and start thinking "I want to do X". The whole thing is that you have such a massive amount of choice vailable to you now. Try Opera, Firefox, Konqueror and Epiphany as web browsers to see which you prefer. for email Evolution is very nice but again, have a look at other available (Thunderbird, Kmail, Slypheed are some).
As Cyfr says, feel free to ask Qs either on here or via MSN, AOL or whatever IM system you prefer.
Ian