Not sure what to tell you. Getting the battery cover off is simple. Remove the battery.
Then look at the rear camera cover... where the edge of the battery seats, you'll see the two tabs that hold that cover on, you have to lift those to remove that rear camera cover. Like I said, I've got a tool that helps do this, but all it is, is a "ice pick" or screw driver with a bent tip... get a small screw driver and a pliers and bend the tip, then you can stick the tip under the tabs and lift them to remove the rear cover.
Once you get the rear cover off, you'll see there are 2 more tabs on the top near the speaker that you have to lift to remove the front cover- you'll be able to remove those with your finger nail most likely- they are easy to get to, as they are under the rear cover - and once its off - you can actually see and touch them.
You gently pull the front cover off the phone itself, it will snap off and away, and you're good. I'll try and make a video for you if I can.