Welcome to Android! As a former iPhone user (and Blackberry and Windows OS...) here are a few things that I like to share with those who jump ship:
- Launchers: They allow you to truly customize your Android phone to be yours and yours alone. Imagine, if you will, if you could change your iPhone's layout from 4x4 to 5x5 or change the way screens transition when you swipe left and right - that's what your Launcher allows you to do. I use
Nova Launcher to do some pretty cool things like creating groups in my App Drawer so that I can quickly see all Apps, Games, Google Apps, Tools, etc... It's like using Folders but way cleaner. I also use Nova Launcher's Gestures to hide/unhide my Notification bar. this increases screen real estate and makes the phone look slick.
- Widgets: These are fun and super helpful, but if you go too crazy, they can drain your battery. For the first few months, try out everything, change your layouts and widgets often. With all this new found freedom, you'll eventually land upon something that is not only useful, but practical. Once you find a layout that you love, make sure you back it up using your favorite Launcher. When you update your software or (if you get advanced) if you start flashing new ROMs, you can restore your layout in a jiffy!
- Unread Count: As an iPhone user, you've become accustomed to seeing badges on your apps where an unread message or notification exists. That doesn't really exist in Android (not exactly, at least), but with certain Launchers and Apps, you can get some of that back. I use
Tesla Unread to help out as I'm using Nova Launcher.
- Free Apps vs Paid Apps: There are a lot of free apps on Android, and a lot of sales! Check back in with the Google Play store and Amazon App store to make sure you don't miss out on the latest sales. Lots of Paid Apps have a free version which is either ad supported or has limited functionality. Either way, they can act as a great control for testing out new apps before you commit to buying them. As a side note, if you want to enable the installation of apps from Third Party Markets, you need to change that in Settings > Security > Unknown Sources. This is a level of freedom you won't see on iPhone unless you're Jailbroken. Amazon is a trustworthy source of apps, but be vigilant when downloading and make sure that you know what you're downloading and who you're downloading from.
- Accounts: You'll notice that your Settings screen contains an area to add Accounts for installed Apps. This is a great feature and will allow you to use stored credentials when you integrate apps with each other.
- To Root or Not To Root: Here's the real beauty of Android. Rooting is a term we use when we (essentially) gain Administrator access to our phones (or Root access). This allows us to install (read: flash) new ROMs (read: operating system variants) and features which require access to the Root file system of the phone. This access is a lot like your company giving you access to install software on your work computer without IT having to come down and do it for you. If you choose to Root your phone, you'll be able to take advantage of many apps which require "Root Access." These apps are readily available in the Google Play store.
- Ringtones: It may sound silly to even bring this up, but for us former iPhone users, creating or adding custom ringtones was a pain in the ass. With Android, you can use any MP3 as a ringtone or notification. I use
Zedge because it's easy, and the downloaded files show up in the default menus within each app when choosing which notification I want.
I'll stop ranting now and let others chime in. Have fun!