Advice required for Change in Career

I have been developer using delphi for client server based applications for the last 30 years.
I want to move into web based applications developement or mobile apps development as I hear that it is the new field. I want advice on what skils should I learn to venture into this field for delivering quick and sturdy apps using databases management etc.
Also any tips on how to grow financially, I am ready to put in the effort.
Allan_FernandesAsked:
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Allan_FernandesAuthor Commented:
Can we build serious applications with this eg: accounting/inventory etc with this.
Will this work on windows laptops also ?
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worm-getterCommented:
java + eclipse.
open source.
software re-usability.
what you want to do (or most of what you want to do) has probably already been done.
thus making your task easier.
try google and youtube.
good luck.
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