You are batting in a run chase and the run rate is gradually creeping up. The opposition are bowling well and you start to think you need a 'get out' boundary. How do you know when to go for it?

During his career, Shane Warne was one of the loudest opponents to coaches; famously saying the only use for a coach was to drive the team to the ground. Yet even he turned to a mentor in Terry Jenner when times were tough or he needed some external help.

The worst batsman in the team is placed last in the order. Why would anyone do anything different?

I think there are circumstances where you would consider putting a better batsman at 11, and the chance to do so happens more often than you might think.

They say you should never meet your heroes, but my meetings with Mike Brearley in his North London home over the last few weeks have been everything I expected.

Twenty20 bowling is about limiting scoring by stopping the batsman playing his best shots.

Unlike longer formats this is not done through bowling a predictable line and length. This approach simply gives the batsman the chance to play his premeditated shots or free her arms and hit you all over the park. The solution is to have a range of different lines, lengths and angles combined with changes of pace.

As I write this the group stages of the World Twenty20 2009 have just finished. What lessons can club players take from the tournament so far?

It's certainly been dramatic: The last ball thrilling opener, Australia crashing out, amazing batting and spinner's domination. Among the chaos of six hitting and stumps flying there have been some lessons all cricketers who play the shorter format to follow.

To celebrate the World Twenty20, PitchVision Academy batting coach Gary Palmer has written his guide to getting maximum runs in minimum time. Gary has coached many players into county cricket over the years, If you would like coaching from Gary, check out CCM Academy.

This edition of Umpires Corner in association with the International Institute of Cricket Umpiring and Scoring covers some more tricky questions of the Laws.

This article is part of the World Twenty20 Lessons series on miCricketCoach. To see the rest of the series, click here. Scroll to the bottom of this article to add your comments.

If you play Twenty20, you might wonder how the professionals approach the game. In this series, miCricketCoach looks at the techniques and tactics that the Internationals use in the World Twenty20 2009.