Homebrew PCBs

Hi friends ,
               I am looking for some very basic information about pcb designing like all about 90 or 45 bend , where 2 put corners , what should be the thickness of the trace . Can you suggest a book or a link where i find all this info . You see the problem is that i have designed a board layout of a circuit in autotrax in which i have done manual routing ( this is my first design ) so i just want to verify if my design is correct . 
                                Thanking you ,
                                                     sunny 


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