Re: Shred Scale...
As for the rest: absolutely no idea what's going on!!! LOL!!!
Same tone/semitone intervals, different scale SHAPE using 4 notes per string on all strings. If you use 4 notes per string and keep the intervals intact, the "Shred Scale" is the shape that you get.
You're a "tab" guy, probably not into scales. This is just another way to look at the road map that those tabs are following...AND AN HONESTLY EASIER WAY TO PLAY THOSE TABS. The tabs are just stops along the way. You're more interested in where you're going then how you got there. Nothing actually wrong with that! Just bear in mind that once you learn scales, then fingering those tabs makes a whole lot more sense!
For people like you who hate scales, they often don't understand the basic concept: C-D-E-F-G-A-B = "Do, Re, Mi, Fa, So, La, Ti, Do." That's the natural scale. Find all of those notes on your fretboard, and the pattern they form will look like the "5 shape mashup" that I posted...
...and now you're playing in C major. Move that pattern two frets closer to the bridge, and you're playing in D major. Two more frets closer to the bridge, and you're in E major.
If you start at the note of A, then it's "La, Ti, Do, Re, Mi, Fa, So;" and now you're playing the Natural Minor...called changing "modes" or "starting points on the natural scale." Changing the root note works the same as with the major...move the starting point two more frets closer to the bridge and play the same pattern, and it's B minor.
Pentatonics...??? Two ways to go about it. Most people say, "Just drop the following intervals from the natural scale, and that's the pentatonic scale." But there's another way to get it. Penta means "five." There are 5 sharps/flats in music. Find all of the sharps and flats that were omitted from "Do, Re, Mi..." and that's the pattern for the Pentatonic scale.
And dude, don't worry if you still don't get it! You're able to play music at a level that's comfortable to you, and you enjoy doing so. THAT'S what's important...!!!
One thing that I hated when I started learning scales is how all of these really good guitar players would say, "And once you know the scales, then you can just pick up a guitar and do this!!!" And then I'd get mad, because NO, FOR SOME REASON I SOUND LIKE A MORON, WHILE YOU SOUND AWESOME!!! AND I'M PLAYING THE SAME SCALE SHAPE THAT YOU JUST SHOWED ME.
There's a trick to soloing...two of them that I know of: (1) hit the same note more than once in a row, and (2) mix it up with half notes, quarter notes, and eighth notes. NOW it starts to sound musical...!!! But I'm here to tell you that it take CONFIDENCE to be able to do that. You have to trust the direction that you prefer to go, and then figure out how to musically get there. It's some "next level" thinking.