I think the more efficient way would be to start reading and focusing on how to write in the first place and then to focus on editing your work. This approach is going to save you a lot of time. 


Some classics on writing well are:

 - White, E. B., & Strunk, W. (1972). The elements of style. MacMillan.
 - Zinsser, W. (2006). On writing well: The classic guide to writing    nonfiction. Harper Perennial.

Perhaps then you should start focusing on editing and I recommend these for the start:

 - Cook, C. K. (1986). Line by line: How to edit your own writing. Houghton Mifflin Harcourt.
 - Ross-Larson, B. (1995). Edit yourself: A manual for everyone who works with words. WW Norton & Company


**BUT** personally the most important guide for me was the edits/comments that I got back from my supervisors, mentors and senior collaborators during the years. I checked their edits over and over again to systematically diagnose what was wrong with my writing and I think those edits/comments were the most helpful resource. I went as far as creating a corpora of literature relevant to my fields of research to know how exactly people write in my domains of interest  in engineering and social science but well that's going a bit too far in the beginning. 

Also one thing that I have noticed which makes a major impact on my editing is switching the edits on screen and on paper. I usually first do a round on screen. Then print and do it offline and then switch again! I don't know about others but in my case I tend to focus on completely different issues on when checking the scree or printed material and if I only do one I will miss a lot more.