Jim,
Yes, the iFly 720 browser will access other sites and let you log in to sites like Vansairforce, etc. I will tell you it is a "Mini" or "Mobile" style browser so it is not going to be as robust as the iPad "Safari" web browser. Will it typically do what you want? Yes. Will there be some frustration along the way when browsing? Yes. Keep in mind it is a Aviation GPS first and foremost.
Finally, yes it will allow you to save some favorites or quick access sites in a tile manner on the start up page. I think Google, BBC and another is defualted. I hope this helps.