Where do I even bloody start?!!

So I got engaged on June 22nd. I've been slowly browsing pinterest for ideas. We're expecting a baby in Novemeber so I'm baby planning first, then planning my wedding... but where do I even freaking start?! All I have picked out is that we're either getting married in December 2018 January or March of 2019. it won't be huge and low budget but I don't even know where to begin