How do you download free iPod touch games

you can either go on itunes or apple store and search for some free ones like:
angry birds lite
flags fun~free
touch hockey(free)
touch tennis:fs5(free)
mancala:fs5
tic-tac touch
touch 4
leaf trombone:lite&free
cool&fun ants touch games lite
bubble shooter free
train conductor
moxo &mayhem light
brain trainer by lumosity.com
ijewels
capcom arcade
bubble shooter free
facebook
smurfs' village
lil' pirates
talking tom cat
gun bros.
ilovefireworks lite
monster truck nitro
minitycoon casino
words by playmesh
cut the rope lite
judge me!(how good are you)
stick wars
saw 3d jigsaw your voice
instagram
talking roby the robot
tap zoo
thetrainline
redlaser
wedoodle
virtual table tennis lite
build a bear
empire story
action heroes 9-in-1
little mettle ball by xmg
helsing's fire light
stick-fu lite
parking mania lite
imazing
spooky playtime
real x-ray photo & video booth-lite
tap tap revenge 3predators lite
bike or die 2-lite edition
billabong surf trip lite
zombie attack!bridge defense XL
cliffed:norm's world XL
touch pets cats
zombie farm
chore hero lite
pocket frogs
these are just some of the free games you can get there are thousends more if you are going to try and find some copy them exacty what i have put because if not you might not get the right one!