For someone maintaining their own vehicles, all they needs to know about the MAF sensor is where it is (see Owner's Manual) and how to keep it clean.
The MAF circuit directly influences gas mileage so it is important to routinely clean the sensor CORRECTLY and safely. As special metals are used for the thin wires which comprise the sensor, it is important to use special purpose MAF sensor aerosol can cleaner ONLY, about $6. Some people automatically grab the WD-40, but you must not...other cleaners may either not clean completely or will leave a residue which mitigate cleaning and compromise results.
MAF attachment screws on Fords often use 'tamper resistant torx' aka 'security torx' for R&R.
http://www.therangerstation.com/tech.../CleanMAF.html questions?