Do's&Don'ts of good Powerpoint

Do’s

Keep slides concise. Experts vary but generally agree on no more than 5-7 lines (not bullets!) per slide and no more than 5-7words per line
Depending on the size of the room, font size should range between 48 for titles to 24 for subtitles and lists. Discipline yourself to eliminate words instead of shrinking font size.
Use sans-serif fonts that are easy to read, such as Arial.

Don’t’s

Include too much details and data (7 words per line and 7 lines per slide)
Crowd the information.
Use flashy or curvy fonts.
Use all uppercase letters (hard to read and can be perceived as yelling).
Avoid obscure abbreviations.
Skip punctuation marks for bulleted items on slides.