This guide is a bellona jungle guide that might help you starting in game and will give you some tips and tricks in general:
This guide is not made by a pro player.
The first tip i will give is when you hit lvl 8:
DO NOT LEVEL ANOTHER ABLITY YET WHEN REACHING LVL 8.
because when you hit lvl 9 you can upgrade bludgeon to lvl 5. then you begin to level scourge to lvl 5 and as last shield bash. In the guide it will say that bludgeon must be leveled on lvl 8. That is impossible at this point. Waiting a level triggers it so you can level the ult and the 2 at the same time. Meaning you have maximum power on your two
Another tip is about fatalis:
Hastened fatalis is very good for following enemies and this gets triggers when used bludgeon. No one can escape you if you have fatalis. The follow on bellona is this good with the bludgeon.