For beginners:
1) join events hosted by other players like F/S, JQ, etc
2) join events hosted by SGM
3) provide summoning service and charge pple for it if u are pro and fast.
4) Make msi and sell them
After u have some capital:
1) invest in 30k+ msi, buy them cheap and resell them at a higher price.
Keep doing these steps and u will slowly see ur money grow
Hope this guide will help u all. Please feel free to comment so I can improve on it. Thanks
And remember, scamming is a fast way to get tetris but it's not the right way
Edit: sorry, this is an old guide which i wrote for another server and there youll be a GM when you have 1000+rbs.