There are at least 7 Alcatel phones in the OneTouch family, at least 3 used by Straight Talk. So go to XDA Forums
, type alcatel onetouch
into the search box (upper right) and choose yours. Then search for rooting methods. The way you root a phone depends on the exact model phone and the version of Android it's running.
(And, as a beginner, if you don't actually need
root for some reason, I wouldn't try it. Rooting, among other things, immediately voids the warranty. And there's a reason for that - with root, you can turn the phone into a hand warmer with one incorrect command.)