This short example shows how to use fonts available on Overleaf to write Hebrew; the list of available fonts are here.
For more examples on using the polyglossia and babel packages to typeset Hebrew (and other languages), have a look at this and this help page.
An event poster with a simple layout, courtesy of beamer. Try scanning the QR codes with a scanner app (e.g. "Scan" on iOS; "QR Droid" on Android and see what happens!