We were all really impressed with how good this forum post was that we asked @Sryan if it was ok to turn it into an article for our Tutorials and Reference section of the main site. Luckily he said ‘Yes!’ as we really had no back-up plan if he refused 
Anyway, it’s the same brilliant post but with my clumsy proofing of it - if there are any mistakes in it, then they’re all mine, so thanks to @Sryan for his patience and wanting to share this great resource. Cheers!