How you would learn your new job in the absence of a formal training program?

Usully orientation is given to newly hired employees, it can be very cost effective even without any expenses. If a business doesnt provide you training or orientation than the business does not expect much from you. Thank you

By searching from previous files used by the company, request a coaching program with your superior, being observant and attentive, find ways on how to do the job effectively and efficiently, be proactive and have an open mindset.

Through

Colleagues/team members

project documentation

if any knowledge sharing documents available

brushing up yourself based on the work assignment.

Learn from the employees working their 

Do research works on all possible aspects of the issues involved.

If the Organisation certified ISO, then all documentation related to role, reporting method, process etc., must be available pertaining to the position you are appointmented. This is more than enough for self learning.

Beyond everything, if you are good to accept everyone in the team as they are, they will come forward whole-heartedly to assist/guide you to settledown ASAP.

By looking into the history documents and all cases and issues related, also get short notice about any problem that faced others and the steps for solving it. Start to work on a small case at first and try to do your best then you can start your career from there .

you should searching from previous files used by the company