How you choose the literature you read (Advice)
Starting good literature habits at the beginning of your PhD is excellent. Here's the method I use:

-First, I created a publication alert for litterature highly specific to my study subject. I used Web Of Science for that, but only because my library subscribe to it. I think you can create similar alert using Google Scholar. I try to keep really up to date with that list because it is centered on my project.

-Second, I follow some journals relevant to my research using RSS feed. Each time there is a new articles in those journals, I get an alert. There is multiple RSS feed organizer software. I personally prefer to received them in my email inbox using Thunderbird. I'm not very good at keeping up with that list, but I try at least to read the article title, to know if something relevent wasn't find by my citation alert. I also got alert from BioRxiv.

-Finally, I follow researchers on Research Gate and thus I receive alert when they publish. I chose to follow the researcher I most often cite.

Keeping up with the literature is hard! I think organisation is part of the key.