When it comes time to actually design the deck, here are some resources to consider. Taken together these have tips about planning, designing, building, maintenance, etc. (Sample: know how big your table will be, then plan at least 4 feet of deck space around it. Neat.)
A lot of these are unfortunately listicles where you have to click for new pages every time you want to see something new. Ugh. But the information is useful.
This Old House (YAAAAS! My dad watched this every Saturday when I was a kid. So many warm and fuzzy memories.): Read This Before You Build Your Deck