Some people can gulp down a few of those horse pills and mega capsules but I take mine one at a time.
Luckily, I do not take many supplements because most of them are modern day snake oil. In most cases they are basically the 21st century's version of nervetonic.
However, good call with getting fish oil, Omega-3 fatty acids are like natural anti-inflammatories, without the dangers to the kidneys caused by standardanti-inflammatories. They reduce swelling and pain from exercise, they let you recover faster, they are good for skin and hair health, they can help withdepression and they can help you with any electrocardio problems (including staving off lethal heart arrhythmias.
Multivitamin is always good and glutamine and/or creative help when used correctly. Almost everything else does not help very much except maybe gives you aplacebo effect.