Baby starting solid soon :D

Hi parents! My baby will be 6 month soon. So excited about starting solids (I mean me!) What should be the first food? Purée? Or rice/oat cereal? If purée, is it fruits or vegetable? What fruit/veg to start with? Feed purée for how long before moving on to a more solid texture food? If not puree, then it’s rice cereal or oat cereal, but which is better? Heard rice cereal has arsenic? And also, any brand recommendations on purée and cereals? What about ikan bilis powder? Hoping to hear from all of you 🤩#FTM