Hi welcome to the forum
firstly you need to ask yourself these questions
will i have enough time for the lizards(school college)
will i able able to afford all the necessary items food, viv set up ,vet fees
will i have room for a lizard some lizards esp iggies need large enclosures
what experience do i have for lizards
IMO iggies are not starter lizards they can be puppy tame but can also give ya a nasty tail whip or bite, they need a large viv and set up.
if you are after a starter lizard i suggest choosing either a leo or beardie or even possible an anole or small lizard, then once you choose one read as much as you can on the species, familiarise yourself with all their requirements, dietry needs, etc
even talk to other keepers and possibly go round to someones and handle theirs.
nurseys right alot of its down to time/commitment/cashflow! ive got a leo and hes my first rep its quite time consuming but im really enjoying him hes lovely,id say start small,not necessaraly a leo but something not so big as an iggy and grow from there,look at the sigs on here theyve got tons lol