I am a fresher, I will be joining a big Fintech company as an SDE soon. I have knowledge about algorithms and basic object oriented design principles using those skills I got the job. I never had the experience of software development, No open source or no big/good development projects. Now I am afraid and want to learn development or work on a project so that I don't face trouble in company. I have a month time and I need some suggestions to get started on development.