I read a thread here on amazon prime, and how people maximise their subscriptions.
Aside from the usual, ordering small items and paying no post.
I recall people use a price watch to track amazon items, and alert them when a price is reached. Further using Prime video.
Is there any other hints on a first time Amazon Prime user?
Prime video is bundled in your subscription for free as well as some storage features you can find in your account.
Kindle has tons of free books if you're Prime too.
Amazon Music has over 2 million free songs included.
One of the best price trackers is http://au.camelcamelcamel.com
Some products have a feature that allow you collate them for delivery at a set date if you don't need them quickly and this grants you some free credit.