Since you are asking for a post about "guitar books vk 2021," I assume you are looking for content suitable for a VK.com community (a VKontakte wall post), likely targeting guitarists looking for educational resources or PDF archives from that specific year.
I’ve noticed that between 2020-2021, VK was the only place hosting PDFs for certain Hal Leonard "Signature Licks" series books. Many of those groups were deleted in 2022 due to copyright strikes, but if you search "guitar book" site:vk.com 2021 using the Wayback Machine, you can sometimes find cached download links. guitar books vk 2021
Which guitar book changed your playing the most? Drop it in the comments! 👇🎸 Since you are asking for a post about
VK Link: [insert VK link]