Jodie Ahmed...it is nice that as a new member you are already looking to give "Thanks" to those who take the time to post useful/helpful comments. The standard used to be that once you have 15 posts completed you will see the "Thanks" button on the left side corner under your ID box. For the moment you may see a star where you can provide "positive" reputation. (I do not remember if that appears sooner or at the same 15 post mark).
Cheers!
Mick