I have instructional products from: Troy, Joe Stump, Chris Brooks, and Rick Graham.
Then going back to the VHS days I have/had tapes from Vinnie Moore, Paul Gilbert, Arlen Roth, Joe Pass. Thru the years I also had books with cassettes and CDs like the Troy Stetina stuff I started on and many others.
AFAIK, apart from Troy, no one really EXPLICITLY mentions “slanting” except Chris Brooks. Chris goes into it fairly deeply in most of his products
Joe Stump makes a few small references along with visual demonstrations like he says something along the lines of “when you’re ascending you’re sweeping down” and he shows dwps, and “when you’re descending you’re sweeping up” and he shows uwps
Rick doesnt really explicitly mention slanting AFAIK. He mentions inside/outside and “economic” (economy) movement. HE also mentions “planting” which is essentially using very small movements lol. Keeping the pick close to the string after you pick a note, having it ready to pick the next one.
One thing about Rick, he seems to definitely be into economy of motion. Thats why it looks effortless as he plays. You dont always SEE explicit “slanting” movements. What you do see is thumb manipulation…which he does mention at times. You can see slanting moves if you know what to look for but in any case he isnt into “big” movements.
Rick and Chris use very small movements. Joe uses somewhat bigger movements so different movements are easier to spot. All of them use thumb/or finger manipulation from what I see.
That should be sort of an eye opener for all of us. If a monster like RG isnt explicitly mentioning slanting, its probably because he isnt all that aware of it. For me that means his “slanting” is very minimal and he is using other motions like thumb moves to compensate. There is more than one way to skin a cat
There is no way to answer “did you improve much” from any one instructional vid lol. The only way to answer that would be to only buy one vid and then go to an island and practice. I have bought many vids concurrently.
Obviously the CTC info helped me the most so far since it is the most explicit and in depth. One thing I will say, once you have the CTC info internalized, the other vids are all of a sudden way more valuable because you can SEE what they are doing even if they dont explicitly mention it
I will say that Rick has many licks that seem fairly unique to him including tons of smooth arp variations. The RG vids will be more important to me going forward because, lets get real, its pretty advanced stuff lol. I have to grow my way into some of it
for instance he has many arps using variations of picking like this:
d-----------4–5------- where the picking is UDDU. Starting any lick on an U is foreign to me and I have avoided it so far but he has so many cool arps that I have bit the bullet and started working on this