[ubuntu] Installing correct driver for AMD Radeon HD 6470M on Ubuntu 16.04LTS

Hello guys new linux user here after 3 days of arduouse struggle trying to get my laptop to boot i finally booted it in recovery mode . I have linux 16.04 installed i want to be able to use my computer without having to start recovery mode. my gfx card is AMD Radeon HD 6470M and i know it isn't 16.04 compatible but i heard there were some open source amd drivers which driver should i install?
I was perusing this website (https://help.ubuntu.com/community/RadeonDriver) but it is too complicated for me to make out anything i was able to run the
lspci - | grep VGA command here is the result.http://imgur.com/Xlmmz2x

when i look at the additional driver app in linux it shows this ((http://imgur.com/ey8JrtK)the resolution is bad due to recovery mode i think) but whenever i press apply it contiues to show it and it never goes away.

thats all i think i can share

SPECS:
Edge E425 (ThinkPad)

Machine info
E2-3000M(1.8Ghz), 2GB RAM(4gb ram i added myself) so 6gb, 320GB 5400rpm HD, 14in 1366x768 LCD, AMD Radeon HD 6470M, CDRW/DVDRW, 802.11bgn wireless, 1Gb Etheet, UltraNav, Camera, 6c Li-Ion

Operating System
NONE CURRENTLY(but came with
Windows 7 (64-bit))

this laptop I just formatted and decided to install Ubuntu.
ubuntu-16.04-desktop-amd64.iso

(this thread is continuation from my previous thread where iwas trying to boot ubuntu)
http://ubuntuforums.org/showthread.php?t=2329130