Hi Meena,
There is no way to simulate wireless at this point so packet tracer / gns etc won't work. In my opinion the easiest/cheapest way to practice at home would be to setup a vWLC in Vmware Workstation and connect it to an AP off ebay (e.g. 1142 are super cheap). In terms of the syllabus and what commands, your cert guide should cover that off.
Ric
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