I understand your excitement about the visa. When I was going to Russia, applying for a visa was a new experience for me. But I found the website
https://sicurinrete.com straight away, and it really helped. All the answers to my questions were there: from the deadlines for submission to filling in the application form. I prepared the documents as instructed, submitted everything online, and in a couple weeks I had the visa in my hands. So, if you need a clear plan of action, use this site - and you won't have to panic about doing something wrong.