Hello,
Generally there are weekend classes held in study centre of IGNOU, but due to covid there was disruption regarding this, and since things have improved comparatively, hence regarding the exact schedule of the classes, only coordinator of your study centre will be able to provide you relevant information, you can visit the official website to get the contact details, else if the situation is conducive enough you can visit the study centre in person to know the details, now coming to your books, it seems you have opted for printed materials, see it's tough to provide you the exact duration because in some cases candidates receive study materials quite early, but in other cases there is delay, and the pandemic is also a big factor in this, nevertheless there is egaynkosh in IGNOU which acts as a digital library, you can access the entire study materials of your course in digital format, since you haven't' mentioned the name of the course, I cannot help you out with exact link, but you can easily find your course study materials at https://egyankosh.ac.in/, make sure you commence your study with this resources, and don't wait out for printed materials, you are also required to submit your assignments prior to appearing for the exams which I believe you must be aware of, also go through previous year question papers at https://webservices.ignou.ac.in/Pre-Question/, this will help you alot in scoring good marks.
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