This question is asking for a subjective answer (which is against the rules of writing a question for the task) and not a fact. It is also difficult to give an opinion on the best one if the person answering this has never used a digital backdrop. Check the Photography Board website for opinions on which digital backdrops are good.
One can find a wide range of photography backdrops on the Amazon website. There are a wide range of brands to choose from and they offer vinyl, professional, seamless, portrait, scenic, marble, yard and wedding backdrops.
There is a hole list of school that have a good digital photography program on the internet. You should take a look to find the best one or to find the nearest one.
Digital media agencies tend to have a strong presence online and on social media. One should check for them on Twitter and trade websites to find a good company.
Books on editing digital video can be found in on-line bookstores such as Amazon and Good Reads. You may also find this book in the Digital Media section of your local bookstore.
Someone can find a good digital photographer in London from a number of sources such as the yelp website. The yelp website displays reviews for businesses located around the world from previous customers.
One can find information about a digital circuit on a number of different informational websites. One can find information on digital circuits on Wikipedia, HowStuffWorks, and Infoplease.
There are a few good free apps for digital drums. If on the Android platform, once can download the "Pro Drum Set" for free. Alternatively, on iOS, once can download "Digital Drum" for free.
An individual can find a Philips digital photo frame at Walmart, at radio shack, at target, and online at any good trusted online supplier such as ebay or amazon.
There are many places where one can purchase digital safes. One can find digital safes at retailers such as Target or Lowe's. One can also find these digital safes from online reputable online retailers such as Amazon or eBay.
Ebay is a good start You can also look Superstore if u want a new one.
A person can find a good price on a digital postage scale from several retailers. Some of these include Amazon, Radio Shack, Walmart, Staples, and Office Depot.
A digital humidifier can be purchased at many different locations. One can find one at Home Depot, Canadian Tire and Lowes. Online, one can find a digital humidifier at Amazon or eBay.