Welcome to the Cisco wireless forum..
Do not worry about bad English as long as we got your message.
I would suggest you to find an Cisco AP (old model) & WLC (4402 or 2106 ) with a PoE Cisco switch from ebay for cheaper cost. Then you can play with those & learn Cisco wireless.
Without a controller you can learn how to configure Cisco AP (standlone mode or Autonomous) & if you have more than 1 AP then you can configure those as bridge, etc.
Read some of my blog posts (autonomous related) & gradually move onto controller based (or Unified Wireless). It will be a nice journey for you.
Cisco configuration guides, Technotes & Config examples would be a definite assets for you. Try to use them as well.
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