I have 10 years experience as Oracle developer/support0 likes
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Don't be one :/. Sorry, but the question is far too strange. If you do have 10 years developing stuff, you shouldn't be a fresher. You should've picked up good design principles and common patterns for software development and worked with a lot of tools.
Just pick up something, read its code and work with it. Should be no problem at all :).
You should start doing it, and as you do it you'll stuck in some point then study and overcome the problem. Repeat and work.
And as you have experience you'll do well.