Etsy for Dummies

Is there such a thing?  A good tutorial in how to dig through and use it? 

I have seen blog posts that show getting birthday packs and things from Etsy to create a theme and this sounded like a great idea to me, but when I go and search, there's no real way I'm seeing to dig into the thousands of results well.

We are having Trajan's 4th birthday party at the Austin Children's Museum and he has said he wants a pirate party.  We are having the party after hours on a Saturday, so we can decorate the party room as well as some minor entry stuff. 

I'm thinking a pirate themed happy birthday banner, maybe some stickers for water bottles, pirate-themed gift sacks... In my mind I was open to seeing great things and finding perhaps even more when I searched Etsy, but instead I'm feeling lost.

Any thoughts on how to more competently find stuff or should I resort to my more natural state of barely getting an evite out (still going to evite regardless) and getting a basic birthday cake?