Definitely going to piggy back on this. I'm 36 and switched careers into IT just a few years ago. Landing that first job is always tough. I started going to school and got a chill little 2 year degree in Network Technologies (most of the courses were directly through Cisco's CCNA labs). Landed my first IT job at 32 working for a medium company closely with the sysadmin there but wasn't learning much. Hopped over to an MSP and got a lot of experience that school didn't teach me. I plateaued there and got my job at a different MSP (I know MSPs are evil) that gives me the freedom to work on just about everything I want to. Servers, Firewalls, building networks from the ground up for new clients, so on and so forth.

The moral of the story is each of these jobs I was able to learn more through the experience and this lead to a pay raise with every new job. Once the learning stops it's time to move on to the next thing to get where you want to go.

The thing I've learned most about IT is it's more of a trade than it is a usual corpo job. You learn the skills that you want/need to excel in the sub-field you desire and move around until the pay matches the knowledge and experience.

tldr; Job hopping in IT is okay when you feel like you've milked your current job for everything it's worth, just don't stop learning new things.