I find bitcointalk very informative, and since my time here, I have noticed an increased time spent on both my phone and computer... is this a good habit that I'm about to begin?
No, it's not a good habit. Sitting behind a computer screen all day or using a mobile phone for long hours isn't good for your health especially for your eyes.
Besides, spending many hours a day reading about a subject doesn't mean you will understand it or learn more about it faster. At the contrary, your mind won't be able to absorb and process all that new information.
At least, use a desktop computer rather than a mobile device and try to get a good monitor with large screen size and a high resolution.