This is you 
(Just FYI, there are almost 57,000 posts here!)
I don’t want to discourage you from asking questions, but I do want to suggest that you spend some time reading through these forums before basically asking people to teach you to play the game 
For example, quite a number of your questions about 5v5 are answered in this topic by @idmonfish, who has been playing VG since the beginning and who has coached the game professionally.
There is a TON of expertise here – we have a lot of veteran players and many who are in the very highest ranks in the game – and these folks are great about sharing their knowledge. To get started, try the search feature (magnifying glass icon in the header) – if you click “options” you can get very selective in how you search.