My biggest advice is keep moving. It helps to workout and move when you are sore, even if it feels like the last thing you want to do. Also get yourself a foam roller and learn how to use it for your different body parts/areas. Epsom salt baths can help if it is too bad. I personally have gotten to the point I power through it. I wear my soreness as a badge of honor, as proof I pushed myself.

IME, it only happens the first couple times when you're not yet used to the new training. A relaxing walk, or a hot bath (with epsom salts) are helpful. A cold shower soon after training is very effective, though unpleasant.

I heard a lot of good things about magnesium oil spray, so I'm trying that, but honestly couldn't tell you if it makes a difference or not!

there are also supplements you can get at any nutrition shop that help with muscle recovery. you can get a lot of great info from the sales person. i have heard from different individuals who lift, each have their own preferences, so i will avoid promoting a certain brand or what i take personally...