There are so many great opimisation techniques if your journey begins or ends at Tottenham Court Road tube station that it's hard to know where to begin.
For the sake of brevity, I will restrict myself to techniques that work on the Central Line and will offer only two techniques.
Observe that the best platform exit when alighting from westbound trains is at the very end of the station - near the back of the train. Accordingly, one should travel in the last carriage.
When beginning a Central Line journey at Tottenham Court Road, regular passengers will have noticed the excessive distance one must walk. Moreover, you must sidestep a busker at the end of a particularly long corridor. There is a better way, Ladies and Gentlemen.
Specifically, when on the last long walk to the Central Line platforms, observe that your journey takes you through a circular chamber. Upon leaving this chamber, the path ahead is split into two: you will be encouraged to walk on the left, to leave space for those leaving a train to walk on the right.
Don't be fooled!
Observe the diagram below: if you follow the signs you will be forced to walk along a long corridor before passing the busker, and finally getting onto the platform halfway along.
You should, instead, ignore the signs, and follow the rightmost path. Provided you choose your timing correctly (fighting against the disembarking passengers would not be an enjoyable experience), you can get onto the platform at least twenty seconds quicker than everyone else. You win again!