In the title of this tip, I am not referring to the type of grip you are using -- overlap, interlock, etc. I am talking about the grip itself.
In my 20 years of teaching students of all levels, I have found that making the needed adjustments concerning grip type and grip size gives you the best chance of realizing improvement very quickly. If the grip is too small and slippery, you will tend to hold on much too tight, creating a host of swing problems.
If using what are considered standard size grips by most manufacturers, chances are their grips are too small.
Be on the lookout for this ongoing potential for trouble.