Added page "How do I ..."

[forman]

Added initial documentation page "How do I ...".

Closes #66

Checklist (strike out non-applicable):

• Changes documented in CHANGES.md
• Related issue exists and is referred to in the PR description and CHANGES.md
• Added docstrings and API docs for any new/modified user-facing classes and functions
• Changes/features documented in docs/*
• Unit-tests adapted/added for changes/features
• Test coverage remains or increases (target 100%)

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 99.93%. Comparing base (ab74336) to head (f589cf0).
Report is 7 commits behind head on main.

❗ Current head f589cf0 differs from pull request most recent head 88706e5

Please upload reports for the commit 88706e5 to get more accurate results.

Additional details and impacted files

@@           Coverage Diff           @@
##             main      #90   +/-   ##
=======================================
  Coverage   99.93%   99.93%           
=======================================
  Files          30       30           
  Lines        1454     1454           
=======================================
  Hits         1453     1453           
  Misses          1        1           

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[pont-us]

Just a couple of typos :)

[forman]

Thanks!