Advice for Junior Developer

Question

I have recently joined as a Junior Developer at a mid sized startup (IT Services company). It's been my 4th day and still no work has been assigned, nor any IDE or tools have been installed on my system inspite of raising ticket and telling about it yo the Team Lead. They have just told me to read about so and so technology from the Net. I am really bored and starting to question my decision to join this firm. I understand juniors take time and all, but there should atleast be some sort of effort and willingness from their end. As a entry level candidate, I prioritise learning and knowledge growth above all.