IT is a huge areas, it's like asking "where can I study human languages?". You really need to focus on what part of IT. IT in general breaks down to software and hardware, but then you have networking, chip design, other hardware like IoT device engineering. Then on the software side, there's operational system design, cloud architecture, low level programming for devices, or software programming for applications then high level coding like game engine scripting, modding, then you move up to website design and social network programming, which is technically IT, but very far removed from something like chip design, which is also IT.
Most universities offer something on hardware or software sides, whether it's computer Science, which covers hardware and low level software as well as the 16 layer OSI network level design, but then you have Software Engineering degrees which cover good coding techniques, how to work in team, version control, etc....
So yeah, really it's deciding what in IT you want. If it's just to help kids be better on PCs, then get them a Raspberry PI and get into Python coding, then maybe move into something lower level like C++. Otherwise, buy them an electronics book, a raspberry pi would also be good for that as it has good output ports for home electronic projects, so they could build a weather station, or Christmas tree lights and control it using Python on the Pi.
