Hi Gary, congrats on your new phone! It'll serve you well, I still love the Galaxy Nexus I've been using since Dec 2011
Flashlight: I purchased "HD Widgets", it has a fantastic flashlight widget.
Podcasts: Can't help ya there, but if you're interested in streaming MP3s using Winamp's good ol' ShoutCast, XiiaLive Lite does the job nicely.
eBook readers: Aldiko, and Moon+ Reader are the ones I use
Todo list: Google just came out with "Keep", which integrates with your Google Drive account to store notes. Start with
drive.google.com/keep/ and download the app
Another great app to help ya get started: ES File Explorer. Browses your local file system, easily connects to other computers on your LAN. It even has its own built in media players, these days I use it to stream my MP3 collection from my laptop over wifi while working in the kitchen. :)
Good luck,
Graeme C