for first insights and literature see the work of the centre for multimodal communication:

https://multimodalsemiotics.com/social-media-as-semiotic-technology/

for first insights and literature see the work of the centre for multimodal communication:

https://multimodalsemiotics.com/social-media-as-semiotic-technology/

Ashkan Latifi, I have read the first three chapters of van Leeuwen's book. The point that I want it to be clarifies, "Is social media an authentic source for conducting a multimodel research ?", Kress's Multimodality (2010) and Kress and van Leeuwen's Reading Images 2006 are also reliable sources.

Cornelia Brantner , thank you for your help.