Hello,
I'm a software professional who is new to Salesforce and want to take the 201/401 Certification. I do have 17 years of software experience in Java/JSP/OOP/SQL etc.. Would love to hear from the folks who have taken the test, as to roughly how long it took to prepare for the test for someone with my background? I plan to use trailhead to learn salesforce. I need a ball-park estimate , is it 1 month/4 months/6 months.

Thanks
 

Does anyone have insight on preparing the data for this step, it says to import data for opportunities, explorers, adventures, opportunity contact roles, and adventure packages. Yet the Exel file only has 3 books, Explorer, Adventure and Opportunity ( which itself is mixed with all kinds of data). Is the data supposed to be cleaned up first?  Any assistance would be appreciated.