There should be a section in the forums part of the website that says help with levels and cloths
but first u need to know where you saved the Jibbin file, like what drive or folder or watever
then you can start to add certain things like levels, grab packs, an other shit
i would just recomend getting a grab pack first. all you have to do is go to the grabpack forum, there should be a list of them as the first post. choose the steez or wallisch and click on the link. you'll come to a website where it will download it for you. after download, save the folder in the jibbin file that you should've found before reading this part. it will ask you if you want to replace the file when you transfer it. click yes and u should be set.