Avram Hershko. Some lessons from my work on the biochemistry of the ubiquitin system.
Fred Sanger. (1988), "Sequences, sequences, and sequences", Annual Review of Biochemistry 57: 1–28, doi:10.1146/annurev.bi.57.070188.000245, PMID 2460023.
Google "How to be a good graduate student" and read the first 20 items. You will find unbelievably common pieces of advice --- you should realize those are tested and true opinions that you want to value.