One of the great things about twitter and modern D&D is that when you are confused about a rules meaning or wording you can just ask the designers for clarification. Of course the designers get a lot of questions so save everyone check if your question has already been answered before asking. Go to twitter and in the search bar type what you want to search for followed by from:JeremyECrawford. If you wanted to search for wild shape size restrictions you could enter:
wild shape size from:JeremyECrawford
You would quickly find:
@CharlesHorikami Wild Shape doesn’t have a size limitation.
— Jeremy Crawford (@JeremyECrawford) May 30, 2015
Wow Wild Shape is crazy! What can’t a Druid do these days!
Sorry Druids, what can you say. Well you might as well include Mike Mearls in your search, he is another designer for D&D who answers questions:
wild shape from:mikemearls OR from:JeremyECrawford
Also check out the pdf of compiled answers from WOTC: http://media.wizards.com/2016/downloads/DND/SA-Compendium.pdf
Follow us https://twitter.com/Aneeria_rpg to see the questions we have already asked.