I agree w/ most that you need a great table. Think extra wide, thick cushion. I invested in arm extenders a few years back and it has made all the difference in the world for the comfort of my clients. You definately also want a heat source/warmer of some sort. I've tried several of the massage table warmers they sell and to be honest don't care for them at all and don't last. I just buy a heated blanket, set to a low setting and have under my extra table padding. The more comfortable you can make the table for a client the better. Test it out yourself by getting on the table and feel what its like to your client. Definately quality linens(high thread count is best) You dont' want something that's too hot or scratchy. Also get a plush/soft and warm blanket. Have a few different sized bolsters on hand too. Its always more comfortable to have a large bolster under the knees, esp. for clients w/ low back issues, then a smaller 1/2 round for under the ankles in prone position. Music: soft slow music is most soothing to your clients, I find anything with a quick tempo of anykind is too stimulating while getting a massage. Keep the lights dim! It helps people calm down and go into a meditative state faster. All in all, it takes time as a new therapist to find your own groove and what works best for you. Try as many things as you can, go for or trade massages w/ other therapists as often as you can starting off as it gives you a terrific gage as to what you like as a client and what is bothersome to you. Trial and error my friend.
Best of luck to you in your new future.