I don't know if anybody has similar problem as I am having -- When I work on or trouble shoot a particular problem, I actually can concentrate well and sometimes an hour could just pass easily and I didn't notice. But when I sit down to learn something like new a tutorial, I realize I just can't concentrate well and easily gets impatient, even though the tutorial is actually pretty nice created with good stuff that I want to learn. Does anybody have similar problem and want to share how to improve ?
The thing about tutorials it that you're not just supposed to read them, you're supposed to re-enact them. The old learning-by-doing, which has been bolstered by recent observations that muscle actions combine to enhance learning.
And it is definitely a good idea to digest stuff like that in manageable chunks.