Hi Michael,
Welcome to this community. You have a whole bunch of answers already, according from the official guides here, and there is some incredibly good advice that has gone your way. One of the most difficult things to do is to go back to the fundamentals. What is it that you want to achieve playing guitar. Is it about using it as a solo instrument, or is it to be able to play and accompany a singer, possibly yourself, or is it to play in a band. Is it to be able to do a singer songwriter kind of approach, and be able to work out your own songs. The second is, how do you actually learn the best way for you.
A lot of people here really only want to be able to accompany themselves or others on the guitar, and work their way through understanding chords and strumming, and may be a few embellishments. Most people would then focus on the kind of songs that they like, and try and play those. Very few would go in a linear fashion through all the songs, and would learn them all. There are just too many of them! The songbooks, and the app which has replaced them works fine for that.
Then there are the structured courses, that are intended to get your practical knowledge of actually playing up to speed, and are very focused on developing skills, if you have the discipline and perseverence, that is a great way to develop all of the skills you need, and over time you would pick up a lot of the ‘why’ music works, by getting the exercises right. And then there is the theory, for a helicopter view telling you how things connect up, but not necessarily what makes ‘good’ music, which of course is a matter of taste and artistry, which takes time to develop, just as the old masters in painting all started first by making charcaol sketches of original paintings, and then learned to mix their own colours and then made copies in oil of original paintings as part of learning their mastery of their chosen medium.
Most of all, I guess as it relates to your question, is the importance of listening, in original recordings of songs that you like, and trying to identify out different components, either the different parts (Verse, choris, bridge etc) and the different instruments, if its a band playing, how the instruments support the singer or the solo instrumentalist etc. That you do, and then you go and find what you need on the website or in this community, by asking questions, by watching the videos posted by people that share their own work here, and relate it to what you would like to achieve.
Good luck in all your musical endeavors
