Limit lines with all caps to two or three and use them with care. Sometimes you will have to tweak the spacing between letters. Multiple lines in all caps are ideal for using negative leading. The reading matter looks forbidding and boring because there is nothing to catch the eye but line after line of type similar in size and tone. Divide wide line widths into multiple columns side by side.
Short paragraphs help to break up long masses of type as can subheads.
Use bullets or numbering. Initial letters, or large letters at the start of a paragraph are valuable. This is an easy one. All it means is that type is meant to be read from left to right in straight lines. Oddball placement should not be done just to be different.