The ITER Physics Basis https://fusion.gat.com/iter/iter-ga/iter_physics.htmll may be a good place to start. The first chapter is gives you a brief overview of various issues in magnetic confinement relevant to ITER. Each of the subsequent chapters addresses each on of the issues in much more detail. Depending on your current level of education these chapters may be too technical. But I think the overview is fairly accessible.
The ITER Physics Basis was published in 1999, and a lot of progress has been made since then and some of the information is outdated. There is a updated series of papers "Progress in the ITER Physics Basis" that was published as a special issue in the Journal Nuclear Fusion Vol 46, #6 (2007) [[
http://iopscience.iop.org/issue/0029-5515/47/6 ]. This issue is behind a paywall, but if you're a university student you can probably get access through your library.
The has been a lot of progress in the 10 years that has passed since the "Progress in the ITER Physics Basis" was published. Unfortunately there hasn't been a Progress in the Progress in the ITER Physics Basis. I might be able to suggest a couple of more recent papers if there's a subject that you find particularly interesting.