In terms of bulletins. What do you, personally, prefer to use the most and how do you adapt your strats in order to utilise them fully (examples would be good)
What I prefer most are bulletins that buff your early game units. This way you benefit the most from your bulletins since you'll most likely be using them all game. While if you only use Tiger bulletins for instance you won't even benefit from them in some games or already lose the game early on since your troops lack the power they get with bulletins.
When I play soviets t1t4, I get 2 conscripts bulletins and 1 for guards health. They are my shock troops and map control, so they can use the buffs from the bulletins the most. Same for the german grenadiers and panzergrenadiers.
There are however some bulletins that are exceptionally strong and are thus worth getting anyway, but that's your own call
