Read pages 104 -120 from the book “An introduction to statistical learning”. I run the commands in R from the lab starting from p.109. It will be very useful to do the linear regression exercises, especially the applied.
I also started a new tutorial in Kaggle from Titanic dataset named “Head Start for Data Scientist” https://www.kaggle.com/hiteshp/head-start-for-data-scientist which has lots of useful information and also online courses you can take in data science. Also I checked this course in coursera https://www.coursera.org/learn/machine-learning which I want to begin and see if I can manage to complete it . It is about machine learning ,so in the next days I will know if it is too advanced for me or not. Maybe I can study both the book and the course and focus there and sometimes run through the tutorials at Kaggle. But it will probably be better to watch the introductory videos on YouTube by Jeff Leek and then start the course.