DOC: Improve clarity and beginner-friendly tone in table tutorial
This PR makes small improvements to the 01_table_oriented.rst tutorial in the getting_started/intro_tutorials section. The changes include:

Simplified explanations for importing pandas and creating DataFrames.

Improved grammar and sentence clarity.

Reworded the Series and describe() method descriptions to be more beginner-friendly.

These edits aim to enhance readability and help first-time users better understand pandas concepts.

Thanks for the PR, but I do not think these changes substantially improve the existing text so going to close this PR. It's best to open PRs that related to an open issue that has been triaged