I'm a first-year statistics PhD student. I have a general problem that I'm trying to solve and as part of that I read a lot of papers on various ideas/approaches. I often find a very nice approach that I like the look of, so I try to understand it and read the paper thoroughly, and also implement it if I can.
However, in reading the paper, I will often then click on the sources and find another idea, which I find just as interesting. I then often end up with a long list of papers I think I need to read and find myself stuck on which approach I should pursue further. In an ideal world I would read as many papers as possible and then pick the 'best' approach for my problem, but my time is limited. As only a first-year, I'm worried that if I don't read enough of these papers, I will miss a key part of the problem and not be able to solve it using the best approach, because my understanding of my research field is still far from comprehensive.
How can I remain focus on my research problem? How do I know which papers I should actually read and which I should discard? I would appreciate some general framework or tips from those who have gone through this.