I've been taking lessons for 3 months and I'm wondering how I'm doing. Obviously, my instructor tells me that I "make very steady progress" and is very encouraging. But, what does the world at large (AKA, you) expect after 3 months of lessons and practice. Here's a list of what my instructor has me doing: (Seems like a lot when I list it out, but how does it compare to expectations for a 3 month old guitar player??)

Open chord progressions (I can do all of these without errors)
Am C G Em
A E D E
Am G D Am C G D D
A7 D7 A7 A7 D7 D7 A7 A7 E7 D7 A7 E7
Em D Cadd9 B7
Am Dm G C F B7 E E

Power Chords/Root 5 Chords (the first on is easy, the other two are a little hard in changing from open to power chords)
A5 G5 F#5 F5 E5
A E F#5 D
B5 D A E

I'm also practicing low E string and A string major and minor barre chords.

Scales - all with met @ 80. I can do them all without errors
Low E chromatic
High E chromatic
Minor pentatonic
Blues scale (minor pentatonic plus two notes)

Various eighth note rhythms - no rests, quarter rests, and eighth rests

Able to step through all notes (low to high) with sharps/flat on all strings.
Name the natural half steps on all strings.
I'm now being put through an exercise where he will say, "Show me both B minors" and I have to find the two barre chords (low E and A string root).