Drupal 8.x

Hello, I am completely new to drupal (and linux) and lost, and the documentation is not helping me maybe because it assumes I know something.  I hope someone can give a nudge in the right direction. 

I'm unable to edit Element  Description /Help items due to the text boxes missing.  Any idea on how to get them to show?  I show the headings for the boxes, Such as Help Text and Description, but no text box for me to put anything.

#Update
Who has the same problems the 2 links below helped me see what my problem was:

https://www.drupal.org/docs/develop/packaging-a-distribution/how-to-package-a-distribution-on-drupalorg

https://www.drupal.org/docs/develop/packaging-a-distribution/drupalorg-distribution-packaging-requirements

How do I make links for images with relative paths e.g /composer instead of mydomain.com/composer

I have a taxonomy term with a image as content, the link of the term is /composer, how do I add this same link to the image?

Edit: It's about the term's content image, as content I've added an image that I'd like to see linked to the term's path, in this case /composer

As shown in the following screenshot I want to add the term's path but thast doesn't work:

I installed drupal 8 about a month ago to be used in my project at a later date, I got it all installed correctly and was able to access the homepage of my site and make edits. However, now that I have come back to the website to actually start working on it, I am unable to access the admin interface of the site. I have been looking through many forums about this issue but they all say the same thing - add one of the following to the end of your website url (without the quote marks):

Dear all,

I am trying to create a personal webpage to showcase my research. Among other things, I'd like to have pages that list all my publications or presentations that I have given. After receiving helpful advice from VM and Michael-IDA. I have started doing this by first defining new content types for publications and presentations containing all relevant information such as title, date, journal, etc and using the Views modules to create pages that are tables displaying all this information.