I would suggest share 1 or 2 success stories you have experienced with SFI. Show them of course the SFI Basics and launchpad. I always advise them of these and then if they have any SPECIFIC questions I would be happy to answer.
You may advise them that SFI takes time to study and read but SFI provides all the information they need.
If it is someone you know well and have seen their talents that fit with SFI then tell them in what ways they can be an asset to SFI.
