How can a developer explor himself outside of his current company?What are the choices?

Learning and imparting knowledge is the best practices for a developer to develop hismself as a lead developer. It make him able to stand longer as a developer in the faster revolving technology industry.

Off-course, if you are in job then can't run a training center of yourself. 

A good developer never treat himself as a senior developer. Imparting of knowledge and mentoring peoples with new trends of technology is the best activities to enhance your ability. 

Daily exploring few good websites like C-sharpcorner.com and keeping an eye on current going on, enhance your skills and keep you update also.

And, now by going through good contents, you have good understanding on these topics but you need to clear yourself by imparting it with others and have some hands-on code exposure also. 

Never be hunger for money in exchange of your knowledge. Knowledge is something which is shared and how much you shared, comes as your deeper understanding on that topic.

Thanks.

1. offline training -- accepted
2.  training institute -- Can not runs training institute if you are working with some company
3.  other projects  -- accepted

take offline training or starting our own training institute,we can also take other projects to work