To cut down a tree, you want to make sure you work your way from top to bottom. Typically, you would climb to the highest spot in the tree that is safe and then you would cut the tree off at the angle you want it to fall. If you are afraid that it will fall on something important and you want to block it from falling there, secure a rope around the tree and hoist it over a near by secure tree branch so that it will not fall straigt to the ground. If the trunk is thicker, then you will want to cut a larger triangle on the side that you want it to fall to and then begin to cut a smaller triangle out of the opposite side. It will then fall to the other side. Then you want to begin cutting larger branches and securing them with ropes if needed on opposit trees. if you wish to use the current tree, then leave the top branches to secure other branches. Then as you work your way down, you can begin cutting the trunk the same way you did the first time. You will also want to rent a stump grinder once your tree is all the way cut down because if you don't, then your risk having the stump become infested with termites, bees or ants.
Use an orchard ladder to reach the uppermost branches. Start cutting at the top of the tree. Try not to cut pieces that are larger and heavier than you can comfortably lift and
move. Move the ladder around the tree as you work. Once you have most of the branches cut away, use a shorter ladder that will stand on its own. Move the shorter ladder into position so that you can begin to
remove the trunk, piece by piece. Cut the last section to within 6' of the ground.