Hierarchical structure design and usability

I created a website for learning languages with flashcard method. The website itself is http://www.vocableman.com
The problem I have run into is that users are complaining that they have problems with understanding the functions and the …
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How do we stop users overpaying in financial web forms?

Submitting my online council tax payment last week, I made a mistake. Instead of specifying £X.00 in a freetext payment field, I missed the dot and accidentally entered by £X000!
I’m currently waiting for my refund request, but in the mean…
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Should Navigation menu have a fix position in application with greater width?

I am developing a web app with 1280px width. Planning to keep 1024 for content and remain as Menu with fixed position. On scrolling main content the menu will not scroll.
Will this be a good for user exp?
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Making the user login again after registration

Is it a bad idea to automatically login a user after their registration was flawlessly completed? A majority of all the websites I visit does not use this behavior, which is the reason for my question:
Is there any reason why a user shou…
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1 form or multiple forms for managing user accounts?

I am currently designing an interface for managing user accounts in a web application.
Essentially, in this interface, the user should be able to edit an account’s profile, disable/enable/close the account, change the password, manage the…
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How can I demonstrate the importance of accessibility to a client?

How could I convince a client that visually impaired customers might want to use his e-commerce website? I want to demonstrate the importance of accessibility and convince him that we should try to make it accessible so that people of all …
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How to indicate that an image is a link too?

I have a section in my website called “Techonology” that is not part of the main content where I put the logos of each technology used in the website (PHP, MySQL, Bootstrap, etc). But I’m searching for a way to point to user that images ar…
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Do users really need to search through a tag page?

My video site offers full search functionality that searches based on title, description and tags.
I also have a category page that has 20+ categories to browse (each video is categorized as well as tagged).
I want to make a tag page th…
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How can I differentiate Online products vs "Offline" products?

I’m helping redesign a website that has some products that can be purchased online and some which can only be purchased offline in physical stores.
Both the products you can buy and can’t buy need to be shown on the site, but how can I pre…
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Would Breadcrumbs be effective if they incorporate Dropdowns?

I’m currently thinking about adding a quite comprehensive section to a website: the section I’m talking about starts at level 3 of the overall website and itself has another four structural levels. Massive!
I cannot use or touch the horizo…