Hello and Welcome to Macross World and to Macross collecting!!!
There are several existing threads that will contain the info you seek....
For webshops used to purhcase Macross toys:
http://www.macrossworld.com/mwf/index.php?showtopic=41210
You can also search for Macross toys and collectibles on Yahoo Japan Auctions and Mandarake...for YJA you will need a proxy service like Buyee or Rinkya....there is a thread that compares the pros and cons of several proxies...just use the "search" tool to locate it....
Here are some ongoing threads were folks list items spotted on YJA and Mandarake....
http://www.macrossworld.com/mwf/index.php?showtopic=41093
http://www.macrossworld.com/mwf/index.php?showtopic=41092
There are several good review sites for Macross toys, but I usually recommend this one:
http://www.anymoon.com/blog/
Additionally, everything you want to know about the various mecha from Macross can be found here:
http://www.macross2.net/m3/m3.html
I'm not too much into podcasts, but go to the Macross World main page for links to one associated with this site....the main page is a good source for the latest Macross news in general, including new toy announcements...
http://www.macrossworld.com/
However, the best place to get the latest news and discussions regarding released and upcoming Macross toys is the "Macross Toys" forums....
http://www.macrossworld.com/mwf/index.php?showforum=4
Finally, it is a good idea to run a search first before posting a new topic.....or simply posting your "Macross Toy FAQ" in this thread:
http://www.macrossworld.com/mwf/index.php?showtopic=33093
Good Luck!....
...and once again...Welcome to the World of Macross Collecting!