What are the overall rules of Muktzeh and its categories?
When is one allowed to move a Muktza object and for what purpose?
It's difficult to tell what is being asked here. This question is ambiguous, vague, incomplete, overly broad, or rhetorical and cannot be reasonably answered in its current form. For help clarifying this question so that it can be reopened, see the FAQ.
An oversimplification, since that's what's being sought: Muktze is something (a) unusable, (b) valuable-cum-fragile, or (c) useless for non-m'lacha uses, or (d) a support for one of the above. Something useless or valuable-cum-fragile can't be moved or used. Something useless for non-m'lacha uses can be moved only if it's needed for a permitted use or occupying needed space. A support for muktze has the status of type of muktze on it. See one of the books mentioned in the comments on the question, or CYLOR, for details; certainly don't rely practically on anything in this answer.
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