For research purposes, You must have some programming skills. It depends on what is your field and your project even your previous programming knowledge. Some explanatory videos can be used, for more on Link https://www.researchgate.net/publication/339585716_Learning_R_Programming_Language_With_Psi_Chi

I would recommend you check out Zuur's Mixed Effects Models and Extensions in Ecology with R. It goes through examples of linear models to generalized linear mixed models. https://www.springer.com/gp/book/9780387874579

I will try them, thank you for your kind reply @Saber A. Riad and @Stephen Parry

Hello, I share a folder with some R books, the folders are divided according to what you need. Most are related to data analysis in environmental sciences

https://drive.google.com/drive/folders/1C_74mC4rfslwy0j9RG6P1y1wWtl2m8Vw?usp=sharing

Also in case your branch is ecology, I share a compilation of almost all existing ecology packages by Russell Gray.

https://docs.google.com/spreadsheets/d/1aYBsFcmY08Zi8Y1Hxp_-7mqApn__frS4S4MHDtwj9r0/edit#gid=950823967

Thank you very much I will try using it and also i will search for online courses Uriel Arnaldo Torres Zevallos

Hi Asmaa,

I recommend you watch this 2-hour introductory course in Linkedln Learning, it is from free. This is a hands-on video that takes you from cero to be able to do some decent analysis. Later you can get into more detail.

https://www.linkedin.com/learning/learning-r-2/r-for-data-science?u=57694217

Best,

Sergio

Several programs have been recommended to you. But R self-learning is a bit difficult in my opinion. It would be better for someone to explain the workings to you.

Sergio Miguel Lopez Ramirez thanks for your help

https://www.physalia-courses.org/courses-workshops/ here you can find many courses related to your field of interest. They are not for free but due to the pandemic they are currently taking place online and they are a bit cheaper than usual.