Alright I say as I sit on the ground and scratch my head. Fire is one of the basic five elements and it could seen as the most deadly one. The fire element is normally used by the members of the Uchiha and Sarutobi clan. A lot of fire jutsus are normally used after the Tiger hand seal at least in the anime but before I started training, I read most of the jutsus in the jutsu list. Something I noticed is that most fire jutsus are used from mid-range to Long-range and that is because if you release fire from your mouth and your opponent is within short-range from you, the user will obviously get burned. The fire element is strong against the wind element, the reason being that once the fire clashes with the wind, the wind adds power to the fire. Lets say I use a B-rank or C-rank Fire jutsu against a B-rank wind jutsu, my fire jutsu would win and since wind adds power to it, the rank of fire jutsu jumps one rank. For example: the B-rank jumps to A rank. Tho if I use a D-rank against a B-rank wind both jutsus will cancel each other out. Another good combination is Earth and Fire.
I could create lava with fire and earth, by basically over heating the rocks. Yeah, you'll have to use a A-rank or above fire jutsu. If I remember correctly there's like one or two fire jutsus that allow you to create it or are a combination with an earth jutsu. We all know fire is weak against water that's obvious but One could create mist or steam if you make the two clash. If the two jutsus are of high rank it creates mist and if the jutsus are not that high in rank it creates steam which is a weaker version of steam. Now with lightning: I believe fire is neutral to fire. I would say if I release fire towards a lightning jutsu, the lightning would continue towards me but then again in this rp it could be different. That's about it for now. .-.