Should we upload different zip files for each font family font weight?
It depends on the font you are using. If you have individual files for each font, you should upload zip files for each weight.
Acquia Cohesion renames to Site Studio from version 6.2. Tell me more.
Running the composer update command will update any composer packages that have newer versions available.
You can use Elements to create content but we don't recommend doing so for multiple reasons.
Yes, the generated templates can be saved to the database.
We recommend using decimals e.g. 1.3 as this makes the line height relate to your font size.
If you're removing styling from a base style, those styles still apply until you have saved the base style.
Base styles are CSS styles for HTML elements.