EveryOne will say its easy but no one will give you the properly guidance to fill out the form.(at least not to me). Suggestion will be something like "fill out(I 130 , I 485), its easy and there is another form i forgot i will let u know or you can use uscis website  there is all the instruction  u need."  I did fill out the forms  but I did  get not  the mental peace. So if this is your first time( which basically is) i suggest use lawyer and later if need to apply for  your family or relative u can do  yourself. Just my 2 cents....