Congrats on your new camera. As for filters, it's a personal preference. You will hear arguements for both sides. When I first got my baby, I got a UV filter for every lens. One saved my kit lens when it drop on a tile floor. It shattered, but my lens was fine thankfully. Nowadays, I treat my camera like a baby, but I don't use a UV filter for protection. It is another layer of glass that can reduce the quality of my photos. For you, it might not make a difference. I do however, use a lens hood all the time, even indoors. One, it prevents lens flare, and two, it offers better protection than a filter as it absorbs impacts (or so I've read). When I store my lenses, I just reverse the hood.
Backup, most serious photographers will tell you to have backups of backups, and even more backups. I store them on my computer, on a backup hard drive, dvds, and online (not all of them, just my good shots). I don't delete them off my memory card until I have at least 2 back up copies. Memory cards, computers, hard drives (yep, had one fall about a foot on to carpet and die on me), etc all can crash and burn. I even keep my portable hard drive and dvds in a fireproof gun safe.
I use SmugMug for online viewing, sharing, storage and have been very happy with them. Customer service is good. The few times I've contacted them I've gotten a response in less than 24 hours (some just a few hours). You can use their templates, do your own (I tinkered with the custom CSS after researching how), or pay to have it done.