Using text entered on first slide throughout course

Can anyone advise how to use information input on slide 1 (such as name, company, age etc.) on other slides throughout the course.  What I want is a first slide where people input information then in future slides their name is used to personalise the whole course to them (I guess I need to input a field but can't work it out.  Any help gratefully received.  Thank you.  Liz

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