I used towelroot on my galaxy s5, but I think I need to have cwm or twrp installed as well and I don't know how, I'm new at this. First time rooting a phone and I really need some help with this. I want to install custom roms. All I've done so far is get root access and downloaded apps like titanium and super user, but I honestly don't know what they are for. Any advice is much appreciated.