Hello Heba,
Thank you for interesting in our EShop Shopping Cart extension. Regarding your questions:
1. Yes, admin can manage whole of purchased orders of store via Orders Manager section at the back-end side of component. Also, customers can also manage their order history from the Customer page of EShop from the front-end side.
2. Yes, EShop supports multiple views to display products on the front-end side. You can choose to use front page view, category view or manufacturer view to display products.
3. EShop does not support support you to upload video for the product. However, it allow you to display the YouTube video in the product details page. So if you upload the video to YouTube, then you just need to put the you tube link to the product, then the video will be displayed.
If you have any more questions, don't hesitate to let me know.
Hope to receive your order soon.
Sincerely, Giang