I mean. Non-stop programming under the constant eye of strong Front end developer (He is your manager and who teaches you). Even better if it's an attractive lady so you can bang after the hard work.
From dusk to down. And in a couple of months, you will feel how strong you've actually become.
And you also better find out what you actually want to do with this skills!)
Because I've learned like a maniac and now I want to learn something else and don't even know when I will come back to front end.