How do I start a league game?

After playing a while, Im familiar with most of the concept of the game. However, one thing Im always confused about is how a game should start. I usually play the jungler role, and watching the pros I noticed they always get red(or white depending on which side they spawn on) with the solo, then help solo get blue and help him lane for a while. What happen in real game is when I call help, usually the mid come as well. This made me really confused as most of the time I see mid start mid camp with the duos(might be mistaken). Can someone give me a detailed explaination of how to properly start a match? Thanks!

https://www.smitefire.com/smite/guide/a-beginners-guide-to-the-roles-and-etiquette-of-smite-conquest-up-to-date-28-5-2014-4401
It's under the Unspoken Rules chapter, with the map.

As a jungler you can also skip red and do baby harpies instead, it's a good idea if you got a solo without HOG and you got DT or VS instead of Bumba's. Or if you do not have HOG, Sprint Merc for example etc :P

But whenever you are on the right side you do either red or baby harpies by yourself while mid and solo does mid and then you and solo meet up at blue :)