WELCOME!
Do not use any cleaners besides vinegar+water or something avian safe like the yellow variety of F10 SC...bleach, windex, air fresheners, lysol etc can ALL kill birds due to their VERY sensitive respiratory systems. They need a lot of oxygen to fly etc, so do not even try to compare them to mammals.
Look out for Teflon/PTFOA/PTFE in HIDDEN places (curling irons, blow-dryers, drip trays, straighteners, humidifiers, irons, ironing boards, space heaters, hot-rollers, bake-in-a-bag meals, microwave popcorn bag coatings , self-cleaning ovens, rice-cookers, air poppers/fryers etc)---many items that heat have Teflon coatings inside and they still give off fumes.
Do not use perfume, hairspray, Sharpies, scented products like candles etc ...even essential oils can kill..PERFUMED ANYTHING=BAD, when scentless things can kill. Burning oil/food is also very dangerous.
Ensure that your bird has enough sleep (10-14 hours)--this impacts immunity and behavior. This means that your bird will need a fairly consistent wake-up and bedtime.
Avoid feeding too much fat or protein. A few seeds mixed in = okay, but pellets and fresh veg are a daily "must".
Wash water dishes daily and make sure no soap residue remains.
Find a CAV (CERTIFIED AVIAN VET) ASAP and get a CBC blood panel, gram stain and cloaca swab to rule out very basic issues.
Research sick birds and know that they are ABSOLUTE pros at hiding illness (weakness gets them killed in the wild)
Spend a lot of time socializing and providing enrichment for your bird, but do not start what you cannot roughly sustain.
NO JUNK FOOD/DAIRY/CHOCOLATE/ALCOHOL/SALT ETC (a teeny tiny bit of salt won't kill if it is like once a week, but remember how small birds are compared to humans and food labels)
Research ABA (Applied Behavior Analysis) and bird behavior in order to avoid reinforcing bad behaviors by mistake!
RESEARCH RESEARCH RESEARCH AND PREPARE TO BE BITTEN-- baby birds are sweet compared to those going through young-adulthood etc.