It sounds easy to do so. Too often however, I find myself reading how-tos and copy-pasting tutorials while building stuff...and forgetting everything after I finished.

I have the feeling that google has significantly changed the way I store things in my head (for the better or worse). Instead of remembering how things are done and why so, I at best save a mental hyperlink to the information or worse, I just rely on google to be available and give me the tutorial/code snippet I need at that very moment (and again forgetting all afterwards).

Being forced to reproduce what you've learned at least once without having google is actually useful (at least for the way my brain works).