this is _really_ good advice - I find when I'm coding in a coffee shop then I feel more productive because the internet is a really big distraction.

I have the documentation on my laptop as well as the framework source code, so whenever I need to look someting up it's there. Having to make an effort to look stuff up means that my brain has more of an incentive to memorise it.

And practise, practise, practise. These things come over time.