This may seem like an obvious one, but if you're a noob... use google for everything. You can manage your contacts very well through your gmail account. If some dumbass verizon rep backed up your old contacts through their shitty backup manager, save them to the SD card, put it in your pc, import them in to google, and remove syncing with verizon backup manager because its garbage. You'll now have a nice back up of your contacts in your gmail account on your computer. You can easily edit them there, add addresses, add pics, etc, and the updates show up in your phone contacts. Think of your gmail account information and your phone contacts as one thing... if you update the one, it'll update the other. The verizon backup thing is simply a huge block to this working smoothly.
Also, the picasa syncing is nice if you like photos. Basically if you have a picasa account set up through your google email address that you're using on the phone, those photos show up in your gallery. The problem is that if you didn't have a picasa account when the phone was first set up, the phone won't find it now. You'd need to set up the picasa account through your google email address on your computer, then do a factory reset/wipe on the phone and start fresh. Very nice feature though if you have family photos and things that you want access to on your phone.
I'd also really suggest launcher pro. The LG and verizon launchers kinda blow in comparison. Launcher Pro is free and you can upgrade to plus for a small fee... totally worth it. The launcher is, for all intents and purposes, the basic user interface you see on the phone... the home screens basically. Launcher pro is just smoother, nicer, has better features, etc. It makes the phone much nicer to use.