Hunter skill training is very identical to OSRS GP Ironman like normal account training. Therefore, it is trained similarly. The only distinction is that you must complete your training at a high-level (85+) by using Herbiboar tracking, since this offers a variety of essential Herbs as well as Hunter experience.
In all likelihood, Magic learning involves many aspects of Runecrafting since you will be mainly making use of Runes for casting spells which offer Magic the ability to experience. You can't purchase them through the Grand Exchange, so almost all of them have be designed by you. You can also get some of them via NPC trading, however this will require a significant amount of gold. It is made using different methods, so make sure to learn about the different methods in our Ironman Money Making Guide.
Early levels of Magic training should be conducted by regular fighting with each hit. For it to be effective, you will have to discover monsters you can make money from. The most effective are monsters that come with Herb drops such as Twisted Banshee or high-end weapon drops such as Fire Giants in Waterfall Dungeon.
You can kill them from behind a rock without risk up to buy OSRS gold level 43 at which point you'll be able to superheat iron Ore. This is likely to be time-consuming and expensive since lots of Nature Runes will be required, but still it will offer the best rates of success in the current stage.