You've got a lot of reading to do. Check out the wiki posts in this forum, the credit card forums and the airlines you wish to fly and/or redeem on.
Also when making a post to gather information the more information you provide the more we can tailor the answer to your specific request. In this instance it would help if we know:
-Where are you located (generally)?
-What is your current travel pattern?
- What is your desired reward travel?
-What class of travel do you currently do?
- What airline and destination do you wish to redeem for?
- What is your credit like?
- Do you currently have any credit cards? and if so did you receive a signup bonus?
- Do you currently have any status or significant mileage balances?