Welcome to the Glowforge community! You can’t really go wrong on any of the proofgrade materials. I would recommend the medium walnut and maple, they are both great and go well together.
For a table, check out this thread. I ended up going with one from Amazon and it works great.
Here is the one I bought:
https://www.amazon.com/Seville-Classics-Commercial-Stainless-Worktable/dp/B0007LQH86/ref=cm_cr_arp_d_product_top?ie=UTF8
You may also want to get some strong magnets to hold your wood down. It is really a must because without them, the wood can warp and not cut through all the way. There are also hold down pins but I haven’t had much luck with those (they break, and don’t hold as well). You can find what people are using by searching with the magnifying glass. There is a ton of info to wade through, and it can be overwhelming! But you can find a lot out just by searching. (Don’t be afraid to ask here either).
Also, here is a great place to start. Check out this info: