thought on a model 1200 pixels, and 12 columns, wordpress template has been developed to fit all screens of your visitors.

How would the previous sentence be correctly capitalized?
Answer: Thought on a model 1200 pixels, and 12 columns, WordPress template has been developed to fit all screens of your visitors.
the deluxe version contains additional tools to upload images to web site, filters, and spell checker.

How would the previous sentence be correctly capitalized?
Answer: The Deluxe version contains additional tools to upload images to Web site, filters, and spell checker.
first of all we need to have some proof, before even suggesting it is a fact.

How would the previous sentence be correctly capitalized?
Answer: First of all we need to have some proof, before even suggesting it is a fact.
to set advanced autoplay options clickautoplay, and then clickadvanced settings.

How would the previous sentence be correctly capitalized?
Answer: To set advanced autoplay options clickAUTOPLAY, and then clickAdvanced settings.