Tips for starting an artillery themed list in 2026?

Hey all, been thinking of starting a guard army but honestly dont know too much about playing them and was hoping to get some tips. I am aware that artillery isnt as good as it used to be but thats not a big deal to me, i personally just think artillery is really cool n thats enough for me. That being said i dont want to be complete trash so any advice on this playstyle or playing guard in general would be highly appreciated!