My advise for (new exploration) CMDRs attempting to get the Guardian FSD booster, and have never dealt with Guardian sites/mechanics before : r/EliteDangerous
Moduli: Guardian – Elite Dangerous Italia
How to unlock Guardian module in Elite Dangerous — CMDRs ToolBox
Elite Dangerous: Guardian FSD boosters - YouTube
A guide to unlocking the Guardian FSD Booster : r/EliteDangerous