Here is the book that I’ve got all this information from. It has other tutorials too but the first one is how to build a speaker cabinet. It has been my main source of information and is very useful as soon as you get used to all the terms.
You can buy it from here:
http://www.guitarmagazine.co.uk/news/guitar-classics-diy-amps-pedals-bible-is-on-sale-now/
or here through Amazon.com:
http://www.amazon.com/Guitar-Classics-DIY-Pedals-Bible/dp/B00AOM9ZZ0
Creating A Speaker Cabinet 
