Good starting places to learn tips, hints..
Who do you think you are magazine
Unlock the Past (very helpful for Australians).
Shauna Hicks, Loads of good advice. Great writer.
For the serious investigator..
Thompson, Paul. (20012). Voice of the past. Published by Oxford University Press, New York, New York, USA.
Dowell, David, R. (2014). NextGen Genealogy: The DNA Connection. Published by ABC-CLIO, Santa Barbara, California, USA.