Against E minor
Use the video to try each tone against a ringing E minor chord. All of these chords are E minor triads [E-G-B only].
Once we have the scale in our hands, with our picking accuracy happening, we jam with the scale. We start this process whether we are 'good at it' or not. The 1000th time will be better than any attempts in the single digits. First, tinker with the tones of the scale, without audio or too much thinking. Next, use some audio. Audio can be a recorded song that you like that is in the key of Em or G. Any song which use G, Em, C, D [very common] is a candidate. Put on the tune, and solo the whole time, even figuring out vocal lines.
Next we will play the scale linearly on string 5, then find equivalents in P1. Once in P1, this is 54 of our 7 Majors system. On string 5, this scale is an octave lower than the C Major scale on string 2. Octave = same tone, twice higher or lower. Play the linear version on string 5 in any rhythm/fingering, then match up the equivalents in P1. Then play scale in P1 using finger-fret assignments. Exact tones = unison equivalents. Unison means exact same tone. They are equivalents.
The E minor Pentatonic/G Major Pentatonic [E-G-A-B-D] is a 5 tone scale. Music which is key-based typically uses scales with 7 [heptatonic]. So, let's add two [using scale starting from the E in a general sense]...