What would you consider a good plus to Sololearn?

Question

To further or specialize in a certain field, what book would you recommend in plus of sololearn php , sololearn python, sololearn MySQL, sololearn JavaScript and so on...?

Answer 1

Solo learn is a complete world for programmers to meet up and brush their coding skills... For books just search for dummies version of any language u want to learn, I assure you, you won't regret reading it