(Take note the guide is now a little out dated but most of the information is still great)
Although it is free, if you found it was a particular helpful feel free to donate, this took a very long time to complete and any little bit helps
And Here is your guide, Just in time for Christmas!!
(if it asks about a donation to the publisher that does not go to me, it goes to the host website)
(although it says buy, it is completely free its just the way the host website works)