Sometimes being mindful can get in the way of learning--sometimes it can support it (for example, catching yourself when you are just drolling through the read not understanding anything).
You will have to learn things the "ordinary" non-mindful way until you understand what mindfulness feels like.
So don't worry, just keep reading and learning about it, absorbing the right Buddhist material on your way to Right Mindfulness.
Eventually, when you have become used to mindfulness and you try to read, you will naturally be one-pointed and focused, as you go through a reading. Your target will be: your purpose for reading.
Your distractions that you will learn to be aware of and transcend (be mindful of): distraction, self-doubt, expectation, etc.
You will be aware of the things in the distraction category and make the one-pointed target (ekagatta) the sun around which your actions revolve.
Until you reach this foundation of mindfulness, don't try to do two things at one time.
You will only be creating more anxiety and false expectation--at least until you are familiar with mindfulness and have an overall more clear state of mind.
Thus, the answer to your question is: meditate more and get stronger in mindfulness before trying to carry your power in the midst of activity. Doing the latter is always more difficult and needs a good foundation in the former.
If you cannot do the latter, you need more foundation in the former.
Use this as a rule of thumb for all activities you want to include into meditation.
I hope this helps, writing this helped me to answer a question I had before, haha.