Sorted "Coding practice for beginners" in alphabetical order (#HSFDPMUW)

[EricBergi]

#HSFDPMUW just helps me, to find my pull-requests better. :)

Summary of your changes

I just sorted the section "Coding practice for beginners" in alphabetical order and changed the first letter of 3 Links to a capital letter.

Description

Checklist

• [x] My change follows the Contributing Guidelines
• [x] I have added only one new link to the list.
• [x] I have checked that the link that I added does NOT exist in the project already.
• [x] I have sorted the link alphabetically under the related section.