Uploading L2 Videos

I saw on youtube many videos and i assume that are many gb anyway i recorded for first time a video i edit it with adobe after effects cs6 and it went to 15 gb with music inside etc then i tried to upload on youtube but it will take ages to be uploaded.

So my question is for the ppl that uploads on youtube any infos or tips to upload faster or make it less gb the video or any other way to upload?