Fish oil, a super food or greens supplement and some protein. Whole foods are what I recommend putting the bulk of the "supplement" money toward. Don't get caught up in supplements until you are more advanced or closer to your goal. People get to wrapped up in the next fancy pre workout or the flashiest bcaa. Don't get me wrong, the supplements can help. They aren't essential unless you can't acquire a certain micro or macronutrient from real food. The foods are always what will yeild best results.
Fish oil is very beneficial however, it supplies a lot of EPA and DHA for all body inflammation, cognitive function, joint support, etc.
A greens supplement is very helpful at providing a ton of vitamins, minerals, alkalizing agents, detoxifying properties, etc.
The protein powder are good bang for buck to reach your protein goals, they are also fast digesting (some more then others such as iso, hydrolyzed). Stick with a whey protein, read the ingredients list, the fewer ingredients means better. Just do your research and I think you'll find a good one.
I am no pro by any means, but I hope this info helps. As someone who wasted hundreds of dollars in my younger years on gimmick supplements, I find it my duty to provide the right info to the beginners.