ions are easy, not as easy as the spyders, but one you've taken one apart a couple of times you'll be fine.
they really are very simple inside, and as a result very little can go wrong. get the eyes working and its rare they chop.
when buying their first marker most ppl fall into the same trap that i did. they go for something a bit cheaper because it ticks all the boxes at the time. but i'd really recomend buying a gun thats better than u need, such as an ion. you can either up it as u progress, or will have an easier time selling it if u decide its not for u. I'd also try as many guns as u can before u buy any one of them.
if ur still not convinced i have a rt mag with air and egg hopper that could be for sale, pm me if interested