I read some of the post to your question. Therefore I hope I do not repeat things you already get an answer. But you can bear my answers.
As a guitar player who strums chord after chord to accompany a song, it is with the common chords a little bit difficult to make chord changes regard to voice leading. Better I say it the other round: You have not to note that you can change chords regard to the voice leading. In every day life you take your guitar and grip some chords. That´s it!
I think it depends on the style you want to play on the guitar.
If you like to play a song in the fingerstyle genre then it is important to have attention to the voice leading. Your book is about that with a lot of jazz harmony: Fingerstyle Jazz like Joe Pass.
If you want to change chords regard to voice leading you have to look to each note in the chord and how you get to the next chord. One of the main rules of voice leading is to go stepwise forward. Leaps are o.k. and you can not always avoid them but be careful with them.
A better way to learn voice leading is to write music in four part writing. I think this is the standard way of doing it. But then you need an other book. The main issue is called contrapunct. If you play a choral of J.S. Bach you will discover how Bach moves forward in every part of the choral. This is voice Leading.
Voice leading depends on which genre you would write or depends on different crucial decision about the aesthetic of voice leading. In classical field it is a question which rules you emphasis. Because voice leading rules have a history. Some rules are very old and are still in use for a compostion. Some other rules are old fashion. Modern classical composition do not regard none of the old rules.
Voicing of a chord: This is a quiet differnt theme.
A voicing of a chord is just the structure of a chord. it means the order of tones in one chord.
I hope I can help you a bit.