I learned the hard way, record it right the first time. Getting a good source is the first rule. Spend time planning and preparing to record the vocal.
There are many tutorials around to help. Dont try to just record it and clean it up later in post, try and get it spot on from the outset.
However these things happen, I use cubase, it has some good plug ins that remove hiss, pops and clicks.
Most audio editors these days feature tools for cleaning up this type of noise.
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