Please help with E-GMAT Verbal Course!!

Hello!

Happy to help with your problems.
My first suggestion would be to go through the 'Your GMAT Roadmap' sub-section in the Verbal section. One by one as you go through the modules, you will understand how to use the e-GMAT portal efficiently.

Regarding your questions,
1) VR stands for Verbal Review. The GMAC publishes three books each year: OG (which most are familiar with) and two concentrated books on Verbal and Quant Review (which are a bit less known). Check out this link to see info about these books:
When it says OG VR, you need to check the question from the OG VR book and then solve it. e-GMAT obviously doesn't want to violate copyright that GMAC holds on its official questions. Hence, they do not publish the complete official question on their portal and give you only the question prompt and location of the question in at least three latest OGs (i.e. OG year and question number). They do not publish options. For that, you need to have access to the actual OG VR book. I can understand if you don't. My suggestion to you, in that case, would be that when you are solving a question, google a part of the question prompt. Most of these questions are available on GMATClub or other GMAT forums, so you can access the complete question there and then mark the right answer in e-GMAT.

2) My recommendation would be to solve the questions as you go with the topic and not save them for later. This helps in proper assessment of where you stand with your understanding of concepts. If you keep saving these questions to be solved later, there is a higher probability that you may actually never come back to them. So, solve the quizzes as you go! Additionally, regarding your fear that you may already have a hint of which topic is getting tested if you solve questions as you go, I understand, this is a natural concern. However, your approach while solving any practice questions shouldn't be to get to the correct answer alone, but rather find out all the possible errors in a particular question. This is the approach that e-GMAT concentrates on: Developing the ability to recognise all errors based on the list of 7-8 errors that they already give you to check any sentence against. So, even if you are solving a question in the parallelism section, solve it completely and check for all errors like SVA, Pronouns etc.

3) Regarding the number of questions in each quiz, it depends but they are usually less like maybe 5-10 questions.

I hope this helps!