Hi @ramavat
To get started, the first and most important resource is to complete the DHIS2 Online Academy self-paced courses (The DHIS2 Online Academy is introducing new courses on our updated training platform!) which are important for your project.
If I understand correctly, you have a tracker program and now want to create indicators. I recommend checking out this guide: Learner's Guide to Program Indicators - DHIS2 Documentation