Been cutting my own hair for years. I highly recommend getting a cordless trimmer if you are doing it yourself. Otherwise the cord will tangle and get in your way. I've had good luck with this Wahl set, but I think there may be a newer version now.
https://www.amazon.com/dp/B0058SY1X6/ref=cm_sw_r_apa_i_32iQEbKKNYSGP