Getting started with SlideShare involves 6 steps: 1) Sign up for an account or log in if already registered. 2) Search for presentations by keyword or open ones you like. 3) Upload your own presentation publicly or privately. 4) Add YouTube videos to your presentations by copying the URL and pasting it into SlideShare. 5) Post comments on presentations at the bottom of their page. 6) You're now ready to use all the features of SlideShare.