Quote: "how to use it as my player object (instead of the sphere i currently use).
"
Assuming you're creating your sphere with a certain object ID, just load your player object model with that same ID
instead.
Quote: "i would like to know how to texture it"
The help file for TEXTURE OBJECT is your best bet, assuming you've already located an image you want to use for the texture. Just load the image file with LOAD IMAGE and then use that image number along with the object ID in TEXTURE OBJECT. Again, check the help file, there's a really easy example there.