Designing PCB is not easy and it usually requires a lot of experience. But what should you do if you have little or no experience? Do not worry. For simple PCB most of rules are not so important, so you will easily design it and gain some experience. In time when projects you do become more complex it is good thing to read advice of others. It is hard to say everything that needs to be said in one short text, but I found one that is very good in my opinion.
It is made generally for PCB design and not referred to some specific program. All terms and problems that are mentioned in text appear in practical PCB designing regardless of what program you choose (Protel, Altium designer, Eagle..). I am sure that it will help you make good quality PCB and prevent future problems in later hardware testing.
Read the whole tutorial below: