Nice to see you posting around the forums! Also, you made a great choice in phones! Let us know how you're liking your Z2 Force!
Though I did not convert from WP to Android, I did convert from BlackBerry to Android. There are some learning curves with any platform jump, but keep in mind that you'll learn everything sooner than you think! In a little while, you'll feel a lot more comfortable and things will come easier to you! Here is my small list of tips:
1) Yes, Android has a LOT of customization options and settings. Don't drive yourself crazy trying to adjust them all or trying to figure them all out. Just try one or two basic things a day and see how you like them. You can always switch a setting on or off if you decide you don't like it! For example, change your lockscreen and background wallpapers today, and try something else tomorrow.
2) Google the Microsoft apps you used most frequently on your Windows Phone. Google Play will most likely have the same app or at least an equivalent one on their online store. Maybe write the list of most-used/must-have apps on a piece of paper and tick them off as you go; so you don't forget an important app.
3) Research and ask! If there's something you don't know how to do, feel free to pop on over here and ask us! Also, YouTube is your friend. There is most likely a video dedicated to the very thing you are looking for.
4) Screen protectors. Protect your new investment with a screen protector, and even a case if you like! I recommend tempered glass, as it still gives you a similar feeling to touching the actual display of your phone; and the quality feels nicer. Amazon has great deals on cases and screen protectors. Not sure what they have for the Z2 Force at the moment, but it's worth checking out!
5) Don't stress. Switching platforms can be a little overwhelming at first, but don't worry! You'll figure everything out soon! It took me a week or more to get used to all of the features on Android, coming from my BlackBerry Q10. But once you figure out that platform jump, switching from one phone to another, regardless of platform or manufacturer, will be much easier. You can do it!
Also, sorry - this was not a small list.