I have been living in Lyon in France for quite some time. I clearly remember the day when I shifted here, I met a Salesforce Platform App Builder professional here in the park. I asked him about his work profile and pretty much liked it. He described his experience and how he reached this stage in his career.
Just like he said, I too started practicing for the DEV-402 certification exam with the help of premium mock tests online. This helped me build my career and move ahead in my life in a strange city that made me its own on the first day itself.