July 19 (Reuters) - Go1, an online library of learning resources, said on Monday it had raised $200 million in fresh capital in a funding round led by SoftBank Vision Fund 2, AirTree Ventures and Salesforce Ventures. The latest round valued the company at more than $1 billion, it said. (Reporting by Niket Nishant in Bengaluru; Editing by Ramakrishnan M.)