I'd always start with Google Jobs, and if you don't have a LinkedIn profile yet, make one! Start connecting with IT businesses near you and check out their postings.
Also, don't be afraid to send in a speculative application - ping over an email, ring up, or even knock on the door if you're close enough. If you seem like a good candidate and there's a job opening up, lots of companies will be happy to skip the (expensive) advertising and interviewing procedure and give you a chance.
Technical qualifications will entirely depend on the jobs you're looking at. Look at some job descriptions, and if there's anything you're not qualified for, figure out why. Look at the skills they're looking for. This will also come out of conversations with employers and unsuccessful applications - these are all great info on what you need to do to land the job.
In IT, there's really two big things (in my view, anyway): broader skills like coding languages, and more specific skills like being able to use a bit of corporate software (e.g. Microsoft Azure).
I think the IT industry is one with tons of resources available for self-teaching online. For example, I've used Codecademy to brush up on more general technical skills for work. If a bit of software is in demand, you could even see if you're able to access it as an individual to get familiar with it.