Never download sicher_b2.exe or setup.zip. Legitimate files are always .pdf, .jpg, .mp3, .zip (containing obvious documents), or links to Google Drive/Yandex.
Sicher B2 was updated in 2018 (Neuausgabe). Many VK links point to the 2014 edition. The listening tracks and some vocabulary are outdated.
Don't just read the texts. Exploit them. Here is your strategy for each of the 12 chapters: sicher b2 vk
A. Reading (Leseverstehen)
B. Listening (Hörverstehen)
C. Writing (Schriftlicher Ausdruck)
D. Speaking (Mündliche Prüfung)
Students fail B2 because they try to memorize the entire glossary.