This is the third and final step of the Beginners guide to wireless network planning, and this step is an optional one. So far we have looked at:
If you find that your wireless network doesn’t stretch as far as you need it to then you can extend it!
Firstly, it is good to use equipment from the same manufacturer of your router/access point. Because if you require assistance they are more likely to help you setup two of their devices and often you can take advatages of features like Linksys Speedboost if you have all their equipment.
These are meant to be quick tips and so I have found a page on the Microsoft site that is better than i could do here so why re-invent the wheel, checkout what they say about Improving your Wireless Signal 
So there we go, a short and simple series in planning a wireless network, but I hope it has helped a few beginners get going, or at least understand what is going on with their wireless network